ITEM NAME:12T 24T 30T Motor Driving Gear Metal Front Rear Differential Gear Upgrade R M8G1 12T 24T 30T Motor Driving Gear Metal Front Rear Differential Gear Upgrade R M8G1 Small and easy to install Made of high quality metal Rust-proof treatment on the surface of gears The gears are milled by precisely milling skill Best gear combo for WLtoys 12428 12423 RC car Colour:brown Material:metal Size:30T differential gear: 2.8cm 12T drive gear: 1.4cm 24T differential planetary gear: 1.2cm 12T differential planetary gear: 0.8cm Package Contents: 2*30T differential gear 4*12T drive gear 4*24T differential planetary gear 8*12T differential planetary gear.2 30T differential gear. 24T differential planetary gear: 1.2cm. 4 24T differential planetary gear. 12T differential planetary gear: 0.8cm. 12T drive gear: 1.4cm. 4 12T drive gear. 8 12T differential planetary gear.