Product Name: Plastic Gear;Type: Single Gear;Fit for: for DIY Motor Gearbox Teeth: 9;Modulus: 0.5;Total Dia: 5.5mm/0.22' Thickness: 5mm/0.2';for Shaft Dia: 2mm/0.08' Material: Plastic;Color: White Weight: 2g;Package Content: 20 Pcs x Plastic Gear