uxcell 20 Pcs 5mmx2mm 9 Teeth Thick Motor Spindle Spur Gear for DIY Robbot Product Name : Plastic Motor Spindle Gear;Type : Single Gear;Fit for : for DIY Toys Motor Reduction Box Teeth : 9;Modulus : 0.5;Diameter : 5m/0.2" Thickness : 5mm/0.2";for Shaft Dia : 2mm/0.08" Material : Plastic;Color : White Weight : 2g;Package Content : 20 Pcs x Plastic Motor Spindle Gear