Material: shift knob threaded screw adapter made of high bite brass, high strength, not easily deformed and broken when applied, providing a tight connection and not easy to loosen for your gear knob. It can be used for a long time. Features: 6 Pcs, 2*M8 X 1.25, 2*M10 X 1.25, 2*M10 X 1.5, meet the shift knob installation and have a spare, easy to replace and next installation Function: Multiple sizes to meet your shift knob size, compatible with more styles of shift knobs, widely used for most 5 6 speed manual automatic shift knobs. Installation: Simplifies installation without modification, cutting or drilling. Smooth, clean threads make installation effortless