EpandaHouse 12Pc Metal Gear Shiftknob Adapters Insert Replacement 6 Metric Sizes + Jam Nuts Includes: 6 gear knob inserts and 6 lock nuts Fit thread sizes: M8x1.25, M10x1.25, M10x1.5, M12x1.25, M12x1.5, M12x1.75 Designed to direclty fit Teamjagger brand shiftknobs or any other shiftknobs that use M16x1.5 inserts Replaced lost insert or change the size to fit different vehicles. Upgrade plastic inserts to metal