BOLT Two-Stroke Cylinder & Head NutsUniversal Two Stroke Cylinder and Head Nuts KitIncludes(7) M8 head nuts(4) M8 flange nuts(4) M10 flange nuts(7) M8 copper washersHead nuts are attractive zinc plated cap nuts. Will fasten cylinders onto either M8 or M10 studs. Fits all two stroke top ends.BOLT Partnumber: 2STKHDNUT 2STK-HDNUT