ITEM NAME:M0.6 3.175mm 13T 14T 15T 16T 17T 0.6 Module Pinion Motor Gear for 1/8 1/10 R3I9 M0.6 3.175mm 13T 14T 15T 16T 17T 0.6 Module Pinion Motor Gear for 1/8 1/10 R3I9 13T-17T 0.6 module pinion motor gears combo Includes set screw Made of high quality material Durable metal construction for long-lasting performance For 3.175mm shaft motor of 1/8 1/10 RC off-road buggy monster truck Material: Aluminum Alloy Colour: Brass color Rust-proof treatment on the surface of gears M: 0.6 Teeth: 13T 14T 15T 16T 17T Height: 9mm Tip diameter 13T: 9mm 14T: 9.6mm 15T: 10.2mm 16T: 10.8mm 17T: 11.4mm Suitable shaft diameter: 3.175mm Package list:1 x M0.6 3.175mm 13T Pinion Motor Gear 1 x M0.6 3.175mm 14T Pinion Motor Gear 1 x M0.6 3.175mm 15T Pinion Motor Gear 1 x M0.6 3.175mm 16T Pinion Motor Gear 1 x M0.6 3.175mm 17T Pinion Motor Gear 5 x Machine screws 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: 13T 14T 15T 16T 17T. 1 x M0.6 3.175mm 15T Pinion Motor Gear. 1 x M0.6 3.175mm 14T Pinion Motor Gear. 1 x M0.6 3.175mm 16T Pinion Motor Gear. 1 x M0.6 3.175mm 17T Pinion Motor Gear. 17T: 11.4mm.