Feature: 75 type ideal for DIY science and small production, product design and mechanical model
Package Included: 19 Pcs x Double Reduction Gear(each one) 12 Pcs x Single Reduction Gear(each on) 11 Pcs x Crow Gear(each one) 2 Pcs x Worm Gear(each one) 9 Pcs x Spindle Gear(each one) 7 Pcs x Belt Pulley(each one) 6 Pcs x Axle Sleeve(each one) 5 Pcs x Belt(each one) 2 Pcs x Connectiong Rack(each one) 1 Pc x Tee Collar
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