Mechanical Kits(486)
Uses item details. Price when purchased online
Best seller Hyper Tough 113 Piece 1/4 and 3/8 inch Drive SAE Mechanics Tool Set, New Condition $23.88
Best seller
$2388
current price $23.88Hyper Tough 113 Piece 1/4 and 3/8 inch Drive SAE Mechanics Tool Set, New Condition
524.8 out of 5 Stars. 52 reviews
Clearance Klever Kits Motor Robotics Kit 36-in-1 STEM Toy for Boys, Educational Science Kit for Kids Ages 8-12 $27.99 Was $43.99
Clearance
Now$2799
current price Now $27.99, Was $43.99$43.99
Klever Kits Motor Robotics Kit 36-in-1 STEM Toy for Boys, Educational Science Kit for Kids Ages 8-12
414.7 out of 5 Stars. 41 reviews
Best seller Best Choice Products Kids 4-in-1 Science Project Kit, STEM & STEAM DIY Maze, Water, Spider, Battery Lab Experiments $24.99 Was $39.99
Best seller
Now$2499
current price Now $24.99, Was $39.99$39.99
Best Choice Products Kids 4-in-1 Science Project Kit, STEM & STEAM DIY Maze, Water, Spider, Battery Lab Experiments
2644.4 out of 5 Stars. 264 reviews
TLGREEN 799pcs Mechanic Tool Set with Trolley Case, Complete Household Tool Kit for Home, Automotive, Garage & Dorm From $79.99
2 options
Available in additional 2 optionsFrom$7999
TLGREEN 799pcs Mechanic Tool Set with Trolley Case, Complete Household Tool Kit for Home, Automotive, Garage & Dorm
2034.3 out of 5 Stars. 203 reviews
Best seller Best Choice Products Kids 4-in-1 Science Project Kit, STEM & STEAM Robot, Solar System, Soap, Weather Lab Experiments $24.99 Was $39.99
Best seller
Now$2499
current price Now $24.99, Was $39.99$39.99
Best Choice Products Kids 4-in-1 Science Project Kit, STEM & STEAM Robot, Solar System, Soap, Weather Lab Experiments
2044.2 out of 5 Stars. 204 reviews
Joycrown Mini V8 Engine Kits That Runs, Build Your Own V8 Engine Building Set with Motor and Battery, STEM Physical Science Educational Toy for Adults Kids Age 14+ (1123PCS) From $35.99
From$3599
Joycrown Mini V8 Engine Kits That Runs, Build Your Own V8 Engine Building Set with Motor and Battery, STEM Physical Science Educational Toy for Adults Kids Age 14+ (1123PCS)
144.4 out of 5 Stars. 14 reviews
Best seller BESTSKY 89%-Gasoline OHV V8 Small-Block Engine Model Kits,V8 Engine Kit Gasoline,Build Your Own STEM V8 Model Engine for Adults,Mini V8 Model Engine Kit (Blue) $19.70
Best seller
$1970
current price $19.70BESTSKY 89%-Gasoline OHV V8 Small-Block Engine Model Kits,V8 Engine Kit Gasoline,Build Your Own STEM V8 Model Engine for Adults,Mini V8 Model Engine Kit (Blue)
71 out of 5 Stars. 7 reviews
95PCS Mini Electric Motors Kit, 130 DC Motor 3V 10000 RPM with Propellers & Gears, DIY Science Experiment Set for Engineering Projects & Educational Learning $13.09
$1309
current price $13.0995PCS Mini Electric Motors Kit, 130 DC Motor 3V 10000 RPM with Propellers & Gears, DIY Science Experiment Set for Engineering Projects & Educational Learning
HopeRock Solar Robots Kit STEM Toys for Kids, Science Kit for Kids, 12 in 1 Beginner Building Toys for Boys 8 to 12, Christmas Birthday Gifts. From $19.99
2 options
Available in additional 2 optionsFrom$1999
HopeRock Solar Robots Kit STEM Toys for Kids, Science Kit for Kids, 12 in 1 Beginner Building Toys for Boys 8 to 12, Christmas Birthday Gifts.
664.5 out of 5 Stars. 66 reviews
BESTSKY 2026 New V8 Engine Kit Gas,Gasoline Ohv V8 Small-Block Engine Model Kits,Mini V8 Engine Kits That Runs,Build Your Own Stem V8 Model Engine,4-Stroke 44Cc Water-Cooled 1/6(Black+Green) $33.67
$3367
current price $33.67BESTSKY 2026 New V8 Engine Kit Gas,Gasoline Ohv V8 Small-Block Engine Model Kits,Mini V8 Engine Kits That Runs,Build Your Own Stem V8 Model Engine,4-Stroke 44Cc Water-Cooled 1/6(Black+Green)
42 out of 5 Stars. 4 reviews
Best Choice Products 4-in-1 Science Project Kit, STEM & STEAM DIY Lab Experiments for Kids $24.99 Was $39.99
Now$2499
current price Now $24.99, Was $39.99$39.99
Best Choice Products 4-in-1 Science Project Kit, STEM & STEAM DIY Lab Experiments for Kids
7874.2 out of 5 Stars. 787 reviews
692PCS MOC V8 Engine Building Kit With Electric Motor STEM Educational Toy For Kids Adults ,Working Model Car Engine Gift Set $42.49 Was $43.99
Now$4249
current price Now $42.49, Was $43.99$43.99
692PCS MOC V8 Engine Building Kit With Electric Motor STEM Educational Toy For Kids Adults ,Working Model Car Engine Gift Set
23 out of 5 Stars. 2 reviews
89%-Gasoline Ohv V8 Small-Block Engine Model Kits, Cison V8 Engine Kit Gasoline, V8 Engine Kits, Build Your Own Stem V8 Model Engine for Adults, Mini V8 Model Engine Kit(Orange)
89%-Gasoline Ohv V8 Small-Block Engine Model Kits, Cison V8 Engine Kit Gasoline, V8 Engine Kits, Build Your Own Stem V8 Model Engine for Adults, Mini V8 Model Engine Kit(Orange)
81 out of 5 Stars. 8 reviews
DESIGNICE 89%-Gasoline OHV V8 Small-Block Engine Model Kits,V8 Engine Kits,Build Your Own STEM V8 Model Engine for Adults,Mini V8 Model Engine Kit - Black $17.11
$1711
current price $17.11DESIGNICE 89%-Gasoline OHV V8 Small-Block Engine Model Kits,V8 Engine Kits,Build Your Own STEM V8 Model Engine for Adults,Mini V8 Model Engine Kit - Black
21 out of 5 Stars. 2 reviews
BESTSKY 89%-Gasoline OHV V8 Small-Block Engine Model Kits,V8 Engine Kits,Build Your Own STEM V8 Model Engine for Adults,Mini V8 Model Engine Kit - Red $19.45
$1945
current price $19.45BESTSKY 89%-Gasoline OHV V8 Small-Block Engine Model Kits,V8 Engine Kits,Build Your Own STEM V8 Model Engine for Adults,Mini V8 Model Engine Kit - Red
4M Tin Can Robot Science Model 3635, 1 Each $15.99
$1599
current price $15.994M Tin Can Robot Science Model 3635, 1 Each
633.9 out of 5 Stars. 63 reviews
V8 Engine Model Kit That Works, 8 Cylinder Car Engine with Motor, Building Blocks Collectibles for Adults, STEM Build Set (487 Pieces) $45.99 Was $59.99
Now$4599
current price Now $45.99, Was $59.99$59.99
V8 Engine Model Kit That Works, 8 Cylinder Car Engine with Motor, Building Blocks Collectibles for Adults, STEM Build Set (487 Pieces)
MECHMAX MM8001 149-Piece Home and Auto Repair Tool Set, Complete Mechanics Hand Tool Kit with Hammer, Socket Wrench, Pliers and Case $48.09
$4809
current price $48.09MECHMAX MM8001 149-Piece Home and Auto Repair Tool Set, Complete Mechanics Hand Tool Kit with Hammer, Socket Wrench, Pliers and Case
Robotic Arm DIY Parts Learning Kit Acrylic Maker Kit Single Claw Mechanical Arm with Servo $15.39
$1539
current price $15.39Robotic Arm DIY Parts Learning Kit Acrylic Maker Kit Single Claw Mechanical Arm with Servo
Pantasy Mazinger Z Mechanical Construction Kit 1895pcs $159.99
$15999
current price $159.99Pantasy Mazinger Z Mechanical Construction Kit 1895pcs
25 out of 5 Stars. 2 reviews
KidzLabs 4M Hydraulic Robot Arm Kit $14.95
$1495
current price $14.95KidzLabs 4M Hydraulic Robot Arm Kit
93.2 out of 5 Stars. 9 reviews
Soldering Practice Kit, TT Motor Line Following Robot Car Kit Beginners DIY Smart Car Solder Project Kit for School STEM Education, Learning Electronic Toys for 10+ Years Old Boys Girls $9.99
$999
current price $9.99Soldering Practice Kit, TT Motor Line Following Robot Car Kit Beginners DIY Smart Car Solder Project Kit for School STEM Education, Learning Electronic Toys for 10+ Years Old Boys Girls
89%-Gasoline Ohv V8 Small-Block Engine Model Kits, Cison V8 Engine Kit Gasoline, V8 Engine Kits, Build Your Own Stem V8 Model Engine for Adults, Mini V8 Model Engine Kit From $17.79
From$1779
89%-Gasoline Ohv V8 Small-Block Engine Model Kits, Cison V8 Engine Kit Gasoline, V8 Engine Kits, Build Your Own Stem V8 Model Engine for Adults, Mini V8 Model Engine Kit
21 out of 5 Stars. 2 reviews
10171 V8 Engine Building Blocks Sets, V8 Engine Model kit That Run, Build Your Own STEM Model Engine, 8-Cylinder Car Engine Building Engineering Toys for Age 14+/Adults Collections(487+PCS) $46.99
$4699
current price $46.9910171 V8 Engine Building Blocks Sets, V8 Engine Model kit That Run, Build Your Own STEM Model Engine, 8-Cylinder Car Engine Building Engineering Toys for Age 14+/Adults Collections(487+PCS)
15 out of 5 Stars. 1 reviews
413PCS Mechanical Orrery Solar System Model Kit DIY Wooden Planetary Gear Assembly Set Hand Crank Moving Planets Science Education Building Project For Adults Hobbyists From $55.68
From$5568
413PCS Mechanical Orrery Solar System Model Kit DIY Wooden Planetary Gear Assembly Set Hand Crank Moving Planets Science Education Building Project For Adults Hobbyists
SEMTO Engine ST-NF2 7.0cc Mini Inline Double-Cylinder Four-Stroke Air-Cooled Nitro Internal Combustion Engine Model Kit That Works, DIY Engine Model Gift for Hobbyists From $75.99
3 options
Available in additional 3 optionsFrom$7599
SEMTO Engine ST-NF2 7.0cc Mini Inline Double-Cylinder Four-Stroke Air-Cooled Nitro Internal Combustion Engine Model Kit That Works, DIY Engine Model Gift for Hobbyists
Wind Power Generator, Solar Power Generator, Mini Fan Panel DIY Science Education Model Kit $4.99 Was $7.99
Now$499
current price Now $4.99, Was $7.99$7.99
Wind Power Generator, Solar Power Generator, Mini Fan Panel DIY Science Education Model Kit
Small Engine Carburetor STEM Learning Kit with Tools and Instruction Manual by Starlight Showcase $38.99
$3899
current price $38.99Small Engine Carburetor STEM Learning Kit with Tools and Instruction Manual by Starlight Showcase
V8 Engine Model Kit That Runs, Motorized Engine Building Set for Adults, Working Visible Engine with Chain & Cylinder Linkage, STEM Mechanical Building Toy $50.99
$5099
current price $50.99V8 Engine Model Kit That Runs, Motorized Engine Building Set for Adults, Working Visible Engine with Chain & Cylinder Linkage, STEM Mechanical Building Toy
Stirling Steam Generator Single Cylinder Engine Model Kit with LED Lights Education $69.99
$6999
current price $69.99Stirling Steam Generator Single Cylinder Engine Model Kit with LED Lights Education
Balanced Two Cylinder Hot Air Stirling Engine Generator Model with Fan, Voltage Meter & Bulb - Science Experiment Educational Demonstration for Adults From $33.99
13 options
Available in additional 13 optionsFrom$3399
Balanced Two Cylinder Hot Air Stirling Engine Generator Model with Fan, Voltage Meter & Bulb - Science Experiment Educational Demonstration for Adults
PicassoTiles 3-in-1 Solar Powered Dinosaur Robot Toy – STEM Science Kit for Kids, Educational Engineering Building Blocks, Creative Learning Set From $14.99
3 options
Available in additional 3 optionsFrom$1499
PicassoTiles 3-in-1 Solar Powered Dinosaur Robot Toy – STEM Science Kit for Kids, Educational Engineering Building Blocks, Creative Learning Set
344.1 out of 5 Stars. 34 reviews
Wooden Mechanical Model Cars Kits, Woodworking Building Kit, DIY Carpentry Construction For Children DIY Toy Educational DIYToys Boys And Girls Kids And Adults
Wooden Mechanical Model Cars Kits, Woodworking Building Kit, DIY Carpentry Construction For Children DIY Toy Educational DIYToys Boys And Girls Kids And Adults
11 out of 5 Stars. 1 reviews
SNOWEAGLE Stainless Steel Hot Air Stirling Engine Steam Engine DIY Model Kit, Science and Education Physics Steam Power Experiment,Alcohol Fuel Engine,Steam Engine Simulation Props $31.99
$3199
current price $31.99SNOWEAGLE Stainless Steel Hot Air Stirling Engine Steam Engine DIY Model Kit, Science and Education Physics Steam Power Experiment,Alcohol Fuel Engine,Steam Engine Simulation Props
LeeQinersw Science Experiment Kits Wooden Mechanical Building Toys Tornado Technology Small $13.99
$1399
current price $13.99LeeQinersw Science Experiment Kits Wooden Mechanical Building Toys Tornado Technology Small
DIY Electric Fan Model DIY Kit DIY Electric Fan Kit Electronic Science Experiment Production Kit $9.11
$911
current price $9.11DIY Electric Fan Model DIY Kit DIY Electric Fan Kit Electronic Science Experiment Production Kit
ZPAQI Robot Claw Kit Acrylic for Arduino Study Set Easy-to-Use Mechanical Arm $23.67
$2367
current price $23.67ZPAQI Robot Claw Kit Acrylic for Arduino Study Set Easy-to-Use Mechanical Arm
Working Low Temperature Stirling Engine Model, Heat Powered Hot Air Engine, Metal Desktop Mechanical Demonstration Model for Physics & Engineering Display From $35.99
3 options
Available in additional 3 optionsFrom$3599
Working Low Temperature Stirling Engine Model, Heat Powered Hot Air Engine, Metal Desktop Mechanical Demonstration Model for Physics & Engineering Display
4M: KidsLabs - Buzz Alarm Money Safe - DIY Electric Piggy Bank Building Kit, Lock-PIN, Circuit Assembly, Mechanical Engineering, STEM Project, Kids 8+ $33.99
$3399
current price $33.994M: KidsLabs - Buzz Alarm Money Safe - DIY Electric Piggy Bank Building Kit, Lock-PIN, Circuit Assembly, Mechanical Engineering, STEM Project, Kids 8+
V8 Engine Model Kit That Works, 1394 PCS Advanced Collectible Engine Building Block Sets with Lights & Spray $99.99
$9999
current price $99.99