58pcs J293Y Plastic Gears Assorted Kit for DIY Robotics and Household Repair

From the shop's description

INTRODUCTION A – Means tight Match(will small 0.05mm than standard) B – Means loose Match(will larger 0.05mm than Standard) Gear Diameter : (Teeth +2) * modulus = Diameter of Gear Modulus: 0.5 Aperture 1.5/2/2.5/3 Spindle gear(9 styles): 8-1.5A 9-2A 8-2A 10-2A 12-2A 14-2A 16-2A 18-2.5A 18-3A Crown tooth(10 styles): C20-2.5A C20-2A C20-3A C2410-2A C2410-2B C2810-2B C28-2A C3010-2B C30-3A C3610-2B Single Gear(18 styles): 20-2A 26-2A 24-2.5A 28-2A 30-2A 36-2A 38-2A 38-3A 40-2A 42-2A 44-2A 44-2.5A 46-2.5A 48-2A 50-3A 52-2.5A 56-2A 56-3A Double gear(18 styles): 1810-2A 4812-2.5A 2210-2B 2410-2B 2610-2B 2808-2B 4610-2B 2810-2B 3010-2B 3210-2B 3212-2B 3412-2B 3610-2B 3808-2B 4410-2B 4810-2B 5010-2B 5610-2A Worm Gear(2 styles): 6 * 6-2A 6 * 8-2A Pulley Gear(1 styles): 6*6-2A Package Including: 58 styles Plastic Gears All The Module 0.5 x 1 lots