ITEM NAME:M1 5mm 18T 19T 20T 21T 22T Shaft Steel Pinion Motor Gear Combot Set for 1/8 L7N5 M1 5mm 18T 19T 20T 21T 22T Shaft Steel Pinion Motor Gear Combot Set for 1/8 L7N5 Made of high quality material Easy to install and durable in use Hard anodized on the gear surface Rust-proof treatment on the surface of gears Durable metal construction for long-lasting performance This M1 5mm 18T-22T pinion motor gear combo set is meshed perfectly to drive motor, it provides great wheel speed and plenty of torque. 1 set: 5Pcs Teeth: 18T 19T 20T 21T 22T Height: 14mm Tip diameter 18T: 14*20mm 19T: 14*21mm 20T: 14*22mm 21T: 14*23mm 22T: 14*24mm Suitable shaft diameter: 5mm Package List: 1 * M1 5mm 18T Pinion Motor Gear 1 * M1 5mm 19T Pinion Motor Gear 1 * M1 5mm 20T Pinion Motor Gear 1 * M1 5mm 21T Pinion Motor Gear 1 * M1 5mm 22T Pinion Motor Gear 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..Teeth: 18T 19T 20T 21T 22T. 21T: 14 23mm. 1 M1 5mm 21T Pinion Motor Gear. 20T: 14 22mm. 1 M1 5mm 20T Pinion Motor Gear. 19T: 14 21mm. 1 M1 5mm 19T Pinion Motor Gear. 1 M1 5mm 22T Pinion Motor Gear.