JWDX Drill Bit Clearance! 1/4" Quick Change Hex Shank Countersunk Drill Bit with Wrench 4 Pieces, Shank 1/4 Drill with Hex Quick Inch Countersink 4Pcs Change Bit Tools and Home Improvement

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Features：
- These countersink drill bits works great in making a smooth hole.
- High-speed steel material , high quality with good durability for you to use.
- Suitable for bore metal, PVC, wood, plank, aluminium alloy or plastic board.
- An essential hardware tool for DIY or the professional wood worker.
- It includes 4 sizes in one drill bit set (#6, #8, #10, and #12), which meet your different needs perfectly.
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Very convenient to change the bits with the included mini hex wrench which loosens and tightens the bits to hold and release as needed.
Specifications:
- Drill Bit Material: HSS-4241 (High-speed steel)
- Black Chamfer Drill Body Material : 45# Steel
- Hex Shank Diameter : 1/4" (6.35mm)
- Size : 6# (2.38mm) , 8# (2.78mm) , 10# (3.175mm) , 12# (3.56mm)
Package includes :
1 x Countersink Drill Bit 6#
1 x Countersink Drill Bit 8#
1 x Countersink Drill Bit 10#
1 x Countersink Drill Bit 12#
1 x Mini Hex Wrench