Double Square Bit(146)
VEVOR XZN Triple Square Spline Bit Socket Set, 10-Piece M4 - M18, Premium Cr-V Steel, 1/4 in, 3/8 in, and 1/2 in Drives, with Enhanced Storage Case, Triple Square Socket Set for Hand Use, Automotive $19.90

VEVOR XZN Triple Square Spline Bit Socket Set, 10-Piece M4 - M18, Premium Cr-V Steel, 1/4 in, 3/8 in, and 1/2 in Drives, with Enhanced Storage Case, Triple Square Socket Set for Hand Use, Automotive
Wilmar Corp. / Performance Tool 9 Piece Master Triple Square Bit Set $19.99

Wilmar Corp. / Performance Tool 9 Piece Master Triple Square Bit Set
9pcs Square Head Bits Square Head Screwdriver Bits | SQ1 SQ2 SQ3, 1/4-Inch Shank, 100mm Length $10.89

9pcs Square Head Bits Square Head Screwdriver Bits | SQ1 SQ2 SQ3, 1/4-Inch Shank, 100mm Length
CASOMAN 20-Piece Spline and XZN Triple Square Bit Socket Set, 1/4", 3/8" and 1/2" Drive, M4-M18, 12-Point Tamper Proof, CR-V & S2 Steel $35.97 Was $39.97

CASOMAN 20-Piece Spline and XZN Triple Square Bit Socket Set, 1/4", 3/8" and 1/2" Drive, M4-M18, 12-Point Tamper Proof, CR-V & S2 Steel
Best seller, 17PCS Double Square 8 Point Star Bit Set (Magnetic Heads & Hex Shank), 8 Point Torx Bits 2 Square Drive Bits, Magnetic S2 Steel Torx Bit Set, 2.3'' & 1'' Long, #1, #2, #3 From $10.79

17PCS Double Square 8 Point Star Bit Set (Magnetic Heads & Hex Shank), 8 Point Torx Bits 2 Square Drive Bits, Magnetic S2 Steel Torx Bit Set, 2.3'' & 1'' Long, #1, #2, #3
Double Square 8 Point Star Bit Set 10PCS S2 Steel Impact Bits $22.99

Double Square 8 Point Star Bit Set 10PCS S2 Steel Impact Bits
Milwaukee 50-32-0220 #1 - #2 Square Drive Double Ended Bit $12.17

Milwaukee 50-32-0220 #1 - #2 Square Drive Double Ended Bit
40PCS SQ2 Square Drive Bits, 2 Inch Long Impact Driver Bit Set, S2 Alloy Steel SQ2 Screwdriver Bits with 1/4 Inch Hex Shank, 2 Packs for Deck Building, Fence Installation, Woodworking & Furniture Ass $23.99

40PCS SQ2 Square Drive Bits, 2 Inch Long Impact Driver Bit Set, S2 Alloy Steel SQ2 Screwdriver Bits with 1/4 Inch Hex Shank, 2 Packs for Deck Building, Fence Installation, Woodworking & Furniture Ass
LABAKUI-8 Point Star Bit Set for Trailers (24 Pack Double Square - CR-MO Steel) 8 Point Torx Bits in The Following Sizes #1 x6, #2 x12, and #3 x6 for Trailers, RVs, and More $25.98

LABAKUI-8 Point Star Bit Set for Trailers (24 Pack Double Square - CR-MO Steel) 8 Point Torx Bits in The Following Sizes #1 x6, #2 x12, and #3 x6 for Trailers, RVs, and More
DEWALT Phillips #2 Square Recess Double-End Screwdriver Bit $16.50 Was $18.58

DEWALT Phillips #2 Square Recess Double-End Screwdriver Bit
Performance Tool W9033 5 pc. 3/8" Dr. Socket Adapter Set WMR-W9033 $15.18

Performance Tool W9033 5 pc. 3/8" Dr. Socket Adapter Set WMR-W9033
KFFKFF Drill Bit Set, Comprising 70 Various Drill and Driver Bits, Screwdriver Bit Assortment Ideal for Drilling in Wood, Metal, and Cement, and for Screw Driving Tasks, Drill Bit Combination $23.99

KFFKFF Drill Bit Set, Comprising 70 Various Drill and Driver Bits, Screwdriver Bit Assortment Ideal for Drilling in Wood, Metal, and Cement, and for Screw Driving Tasks, Drill Bit Combination
LABAKUI-8 Point Star Bit Set for Trailer, Double Square Bit Set, #1, #2, #3 $34.98

LABAKUI-8 Point Star Bit Set for Trailer, Double Square Bit Set, #1, #2, #3
Bosch Impact Tough 6 In Square #2 Double-Ended Bit $9.99

Bosch Impact Tough 6 In Square #2 Double-Ended Bit
Best seller, Greenworks Pro 10-Piece Double-Sided Impact Bit Set, with Phillips, Slotted, Square, and Torx Sizes $9.97

Greenworks Pro 10-Piece Double-Sided Impact Bit Set, with Phillips, Slotted, Square, and Torx Sizes
LABAKUI-8 Point Star Bit. VEGA Double Square #2 Professional Grade 2 Square Drive Torx 2 Bit Set. 150DS02A-3 (Pack of 3) $25.98

LABAKUI-8 Point Star Bit. VEGA Double Square #2 Professional Grade 2 Square Drive Torx 2 Bit Set. 150DS02A-3 (Pack of 3)
LABAKUI-Double Square 8 Point Star Bit Set with Quick Change Bit Driver $40.38

LABAKUI-Double Square 8 Point Star Bit Set with Quick Change Bit Driver
Ideal 78-0104-25 Double Ended Square #2, Phillips #2, 25/Clam $49.49

Ideal 78-0104-25 Double Ended Square #2, Phillips #2, 25/Clam
Freud Inc Diablo 3-Piece Square Recess Double-End Screwdriver Bit Set $20.05

Freud Inc Diablo 3-Piece Square Recess Double-End Screwdriver Bit Set
Onsrud 1/4" Diam, 1" LOC, 2 Flute Square End Double Edge Router Bit $62.16

Onsrud 1/4" Diam, 1" LOC, 2 Flute Square End Double Edge Router Bit
AMTOVL Impact to 1/4 Hex Converter - 1/4 INCH Drive Female to 1/4-Inch Hex Adapter for Ratchet Wrench Drivers, Impact Bit Holders, Quick-Change Chuck $8.99 Was $9.99

AMTOVL Impact to 1/4 Hex Converter - 1/4 INCH Drive Female to 1/4-Inch Hex Adapter for Ratchet Wrench Drivers, Impact Bit Holders, Quick-Change Chuck
VEVOR Drill Bit Set, 70 Pieces Drill and Driver Bit Set, Screwdriver Bit Set Suitable for Wood Metal Cement Drilling and Screw Driving, Drill Bit Sets Combo Kit Assorted in Organized Carrying Case $28.90

VEVOR Drill Bit Set, 70 Pieces Drill and Driver Bit Set, Screwdriver Bit Set Suitable for Wood Metal Cement Drilling and Screw Driving, Drill Bit Sets Combo Kit Assorted in Organized Carrying Case
Onsrud 1/4" Diam, 1" LOC, 2 Flute Square End Double Edge Router Bit $68.51

Onsrud 1/4" Diam, 1" LOC, 2 Flute Square End Double Edge Router Bit
Best Way Tools #1/#2 Square Double Ended Screwdriver Bit 1/4 in. Dia. x 2 in. L 1 pc. $21.37

Best Way Tools #1/#2 Square Double Ended Screwdriver Bit 1/4 in. Dia. x 2 in. L 1 pc.
6Pcs Multi-bit Screw Drivers, Double-Ended Bits with Magnetic, Impact-Rated Screwdriver Bits for Hex/Torx/Phillips/Slotted/Square, 3" long, S2 Steel, H4/6, T10- T25, PH1/2, SL4/6, SQ1/2 From $10.04

6Pcs Multi-bit Screw Drivers, Double-Ended Bits with Magnetic, Impact-Rated Screwdriver Bits for Hex/Torx/Phillips/Slotted/Square, 3" long, S2 Steel, H4/6, T10- T25, PH1/2, SL4/6, SQ1/2
Master Mechanic 255382 Double End Impact Screwdriver Bit, #2 Square, 5-Pk. - Quantity 6 $41.37

Master Mechanic 255382 Double End Impact Screwdriver Bit, #2 Square, 5-Pk. - Quantity 6
2-Flute HSS Square Double End Mill HD-2 Bright 5/8"x5/8"x1-1/8"x5" C42076 $92.87

2-Flute HSS Square Double End Mill HD-2 Bright 5/8"x5/8"x1-1/8"x5" C42076
Onsrud 1/4" Diam, 1-1/4" LOC, 2 Flute Square End Double Edge Router Bit $113.10

Onsrud 1/4" Diam, 1-1/4" LOC, 2 Flute Square End Double Edge Router Bit
2-Flute HSS Square Double End Mill HD-2 Bright 1/4"x3/8"x1/2"x3-3/8" C42058 $43.75

2-Flute HSS Square Double End Mill HD-2 Bright 1/4"x3/8"x1/2"x3-3/8" C42058
3-Flute HSS Center Cutting Square Double End Mill HD-3 Bright 3/16x3/8x1/2x3-1/4 $62.52

3-Flute HSS Center Cutting Square Double End Mill HD-3 Bright 3/16x3/8x1/2x3-1/4
yonico router bits pattern bit solid carbide flush trim spiral 1/4-inch compression 1/4-inch shank 33400-sc $29.95

yonico router bits pattern bit solid carbide flush trim spiral 1/4-inch compression 1/4-inch shank 33400-sc
KFFKFF Drill Bit Set, Comprising 246 Drill and Driver Bits, Screwdriver Bit Assortment Ideal for Drilling in Wood, Metal, Cement and Screw Driving Tasks, Drill Bit Combination Kit Neatly $45.99

KFFKFF Drill Bit Set, Comprising 246 Drill and Driver Bits, Screwdriver Bit Assortment Ideal for Drilling in Wood, Metal, Cement and Screw Driving Tasks, Drill Bit Combination Kit Neatly
Onsrud 1/2" Diam, 2-1/8" LOC, 2 Flute Square End Double Edge Router Bit 1/2" Shank Diam, 6" OAL, Right Hand Cut, Solid Carbide, Use on Multiple Materials $249.00

Onsrud 1/2" Diam, 2-1/8" LOC, 2 Flute Square End Double Edge Router Bit 1/2" Shank Diam, 6" OAL, Right Hand Cut, Solid Carbide, Use on Multiple Materials
2-Flute HSS Square Double End Mill HD-2-TC TiCN 1/4x3/8x1/2x3-3/8 C33697 $50.32

2-Flute HSS Square Double End Mill HD-2-TC TiCN 1/4x3/8x1/2x3-3/8 C33697
4-Flute HSS Center Cutting Square Double End MIll HD-4C Bright 11/32x3/8x3/4x3-1/2 $51.16

4-Flute HSS Center Cutting Square Double End MIll HD-4C Bright 11/32x3/8x3/4x3-1/2
Accupro 1/8", 1/4" LOC, 1/8" Shank, 1-1/2" OAL, 2 Flute, Solid Carbide Double Square End Mill, Spiral Flute, 40 Helix, Centercutting, RH Cut, RH Flute $24.88

Accupro 1/8", 1/4" LOC, 1/8" Shank, 1-1/2" OAL, 2 Flute, Solid Carbide Double Square End Mill, Spiral Flute, 40 Helix, Centercutting, RH Cut, RH Flute
2-Flute HSS Square Double End Mill HD-2 Bright 5/32"x3/8"x7/16"x3-1/8" C42052 $44.62

2-Flute HSS Square Double End Mill HD-2 Bright 5/32"x3/8"x7/16"x3-1/8" C42052
Hertel 1/2", 1" LOC, 1/2" Shank, 4-1/2" OAL, 4 Flute, HSS Double Square End Mill, TiCN Finish, Spiral Flute, 30 Helix, Centercutting, RH Cut, RH Flute $54.15

Hertel 1/2", 1" LOC, 1/2" Shank, 4-1/2" OAL, 4 Flute, HSS Double Square End Mill, TiCN Finish, Spiral Flute, 30 Helix, Centercutting, RH Cut, RH Flute
2-Flute HSS Square Double End Mill HD-2-TC TiCN 1/8x3/8x3/8x3-1/16 C33689 $47.43

2-Flute HSS Square Double End Mill HD-2-TC TiCN 1/8x3/8x3/8x3-1/16 C33689
4-Flute HSS Center Cutting Square Double End Mill HD-4C Bright 7/16x1/2x1x4-1/8 $52.57

4-Flute HSS Center Cutting Square Double End Mill HD-4C Bright 7/16x1/2x1x4-1/8
2-Flute HSS Square Double End Mill HD-2 Bright 3/4x3/4x1-5/16x5-5/8 C42080 $114.32

2-Flute HSS Square Double End Mill HD-2 Bright 3/4x3/4x1-5/16x5-5/8 C42080
2-Flute HSS Square Double End Mill HD-2-TN TiN 1/4x3/8x1/2x3-3/8 C33656 $49.87

2-Flute HSS Square Double End Mill HD-2-TN TiN 1/4x3/8x1/2x3-3/8 C33656
3-Flute HSS Center Cutting Square Double End Mill HD-3 Bright 1/2"x1/2"x1"x4-1/8" $78.61

3-Flute HSS Center Cutting Square Double End Mill HD-3 Bright 1/2"x1/2"x1"x4-1/8"
2-Flute HSS Square Double End Mill HD-2 Bright 1/4x3/8x3/8x2-7/8 C42103 $41.77

2-Flute HSS Square Double End Mill HD-2 Bright 1/4x3/8x3/8x2-7/8 C42103
Onsrud 1/8" Diam, 5/8" LOC, 2 Flute Square End Double Edge Router Bit $80.94

Onsrud 1/8" Diam, 5/8" LOC, 2 Flute Square End Double Edge Router Bit
Onsrud 3/16" Diam, 1" LOC, 2 Flute Square End Double Edge Router Bit 1/4" Shank Diam, 4" OAL, Right Hand Cut, Solid Carbide, Use on Multiple Materials $80.94

Onsrud 3/16" Diam, 1" LOC, 2 Flute Square End Double Edge Router Bit 1/4" Shank Diam, 4" OAL, Right Hand Cut, Solid Carbide, Use on Multiple Materials
3-Flute HSS Center Cutting Square Double End Mill HD-3-TC TiCN 5/16x3/8x3/4x3-1/2 $63.28

3-Flute HSS Center Cutting Square Double End Mill HD-3-TC TiCN 5/16x3/8x3/4x3-1/2
4-Flute HSS Center Cutting Square Double End Mill HD-4C Bright 3/16x3/8x1/2x3-1/4 $44.64

4-Flute HSS Center Cutting Square Double End Mill HD-4C Bright 3/16x3/8x1/2x3-1/4
2-Flute HSS Square Double End Mill HD-2-TC TiCN 7/16x1/2x13/16x4-1/8 C33709 $67.88

2-Flute HSS Square Double End Mill HD-2-TC TiCN 7/16x1/2x13/16x4-1/8 C33709
2-Flute Cobalt 8% Square Double End CenterCut Finisher CTD HDC-2 Bright 1/4x3/8x1/2x3-3/8 $34.21

2-Flute Cobalt 8% Square Double End CenterCut Finisher CTD HDC-2 Bright 1/4x3/8x1/2x3-3/8
Other options to consider(331)
FAQ
Is Torx the same as double square?
No, Torx and double square bits are different. Torx bits have a six-point star shape, commonly used for screws that need high torque and less cam-out. Double square bits, on the other hand, feature an eight-point star pattern, sometimes called an 8-point star or 8-point Torx, but they're not interchangeable. Double square bits are often used in automotive and heavy-duty applications. If you're working on a project, make sure to check which bit type matches your fastener to avoid damaging tools or hardware.
What is an 8 point star bit called?
An 8-point star bit is usually called a double square bit. This bit has eight points and is designed to fit fasteners with a matching pattern, often found in automotive and industrial equipment. Double square bits provide a secure grip and help prevent stripping, making them ideal for tasks that require extra torque. If you see a screw or bolt with an eight-point star shape, you'll want to use a double square bit for proper fit and performance.
What are double square bits used for?
Double square bits are commonly used for heavy-duty applications, especially in automotive, machinery, and trailer assembly. Their unique eight-point design allows for better torque transfer and reduces the risk of rounding out fasteners. You’ll often find them in tasks like engine work, brake jobs, and securing trailer hardware. If you’re tackling a project with specialized fasteners, double square bits can help make the job easier and more reliable.
How do I pick the right double square bit?
To choose the right double square bit, start by matching the bit size to your fastener.
- Check the fastener head for the number or size marking.
- Compare it to the bit set, ensuring a snug fit without wobble.
- Consider the length and shank type if you need extra reach or compatibility with your tool.
Can double square bits be used with power tools?
Yes, double square bits are compatible with most power tools like drills and impact drivers, as long as the shank matches your tool’s chuck.
- Look for bits with standard hex shanks for easy use.
- Double square bits are designed for both hand and powered applications.
- Always ensure the bit is securely seated before use to prevent slipping.
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