Bluemoona 30 Pcs - 2mm 2.3mm 3mm 3.17mm 4mm Modulus Modulus Plastic Gears Kits P

Material:Plastic 2mm 2.3mm 3mm 3.17mm 4mm Shaft Gear Kits Worm Bevel Gear For Motor Propeller Quantity=30 pcs 1.Modulus:0.5 modulus 2.Spindle Gear:white 80.8A 1pc ,81A 1pc,81.5A 1pc,82A 1pc,102A 1pc,122A 1pc,132A 1pc,142A 1pc,182A 1pcs 3.Blu...