Feichao 106Pcs Plastic Motor Gear Rack Pulley Worm Single Double Gearbox for DIY Robot Toy Car Vehical Ferry Model 4WD
$6.00
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Four-wheel Drive Children Scientific Experiment106Pcs Plastic Motor Gear Rack Pulley Worm Single Double Gearbox for DIY Robot Toys Car Ferry Model Introduction: Contains a variety of different types of gear, all can be consistent with each other, modulus 0.5, the hole were 1.9mm, 2.05 (2.0) mm, 2.4 (2.55) mm, 2.9 (3) mm and so on. Also includes hexagonal gears, racks, pulleys, belts, axles and other diy accessories. Gear diameter formula: gear diameter (addendum circle) = (number of teeth +2) * modulus
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