【Product Description】 Shift Knob Conversion Adapter - Extension. This adapter is used to install an M12x1.25 shift knob on a vehicle with an M10x1.5 thread pitch. Converts the thread size of the shift knob and shift lever. Converts from shift knob side M12x1.25 / shift lever side M10x1.5. 【Product Specifications】 Material: Aluminum Size: M10x1.5 (compatible with M12x1.25 on the shift knob side) Quantity: 1 piece 【Compatible Vehicles】 Universal Can be used when replacing with an aftermarket M12x1.25 shift knob. The material is aluminum and is soft, so be careful not to overtighten during installation.