Feature:1. Good Compatibility: This RC pinion gear is compatible with popular brands like for hsp, for xial, for traxxas, for Redcat, and more, making it suitable for a wide range of motorized applications.2. 3.175mm Shaft Diameter: The RC car motor gear comes with a 3.175mm (0.125in) shaft diameter, providing a secure fit for compatible motors and ensuring optimal power transfer.3. Excellent Steel Powder Alloy Material: This motor gear is made of excellent steel powder alloy material, which is sturdy and wear resistant, not easy to be damaged and has a long service life.4. Hard Anodised Surface: The surface of this RC pinion gear features a hard anodised treatment, which prevents rust and prolongs its service life.5. CNC Processing: This metal pinion motor gear replacement features CNC processing, which allows for smoother rolling and more stable performance.Specification:Item Type: Motor GearMaterial: Steel Powder AlloyModule: M0.6Shaft Diameter: Approx. 3.175mm / 0.125inUse: Compatible with for hsp, for Axial, for traxxas, for Redcat and other brands..Package List:3 x Motor Gear3 x Set Screws