●Material: Made of Brass, this Shift Knob Adapters kit includes1*M8 X 1.25, 1*M10 X 1.25, 1*M10 X 1.5 internal Thread to M12 X 1.25 external thread, almost universal. ●Smooth and clean threads provide effortless installation. ●Worry-free refund if you are not satisfied with the performance.