ITEM NAME:3Pc M1 20T 21T 22T Pinion Motor Gears for 1:8 RC Buggy Car Truck DIY D5Z7 3Pc M1 20T 21T 22T Pinion Motor Gears for 1:8 RC Buggy Car Truck DIY D5Z7 Durable construction for long-lasting performance Rust-proof treatment on the surface of gears For 5mm shaft motor of 1/8 RC off-road buggy monster truck Teeth: 20T 21T 22T colour:Black Material:Metal size:shaft diameter: 5mm 20T: 22*14mm 21T: 23*14mm 22T: 24*14mm Package Contents:3x gear 3x Machine screws Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.