The kit includes gear, rack, pulleys, belts and other transmission parts total of 34 photographs taken in kind. Accessories range, a research laboratory, science activities, and other essential personal diy model of mechanical parts! !
34PCS a lot,Plastic gear,rack, pulley, belt,Worm gear,Single-and double-gear,8-56 teeth The package including :
9 kind of Spindle gear 11 kind of Crown gear 12 kind of Single gear 19 kind of Double gear 7 kind of Belt pulley 2 kind of Worm gear 5 kind of Belt 2 PCS Connect rack 6 PCS Axle sleeve 1 PC Tee Axle Sleeve 1 PC Bevel gear