Description: 48DP ?3.175mm 13T-17T Pinion Motor Gear Easy installation and long service life, hard anodic oxidation of gear surface, anti rust treatment of gear surface Applies to 1/10 RC model car 5mm shaft brushless brush motors The holes are all positive tolerances, 0-0.03, M3 fixed screw holes Teeth: 13T 14T 15T 16T 17T Material: 45 Steel Size Chart: 13T: ?3.175*?7.95*9mm RoHS 14T: ?3.175*?8.48*9mm RoHS 15T: ?3.175*?9.01*9mm RoHS 16T: ?3.175*?9.54*9mm RoHS 17T: ?3.175*?10.07*9mm RoHS Package Includes: 1 Piece 48DP 13T Pinion Motor Gear 1 Piece 48DP 14T Pinion Motor Gear 1 Piece 48DP 15T Pinion Motor Gear 1 Piece 48DP 16T Pinion Motor Gear 1 Piece 48DP 17T Pinion Motor Gear 5 Pieces M3 Screws Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may be 1-2mm error in size