Bolt Cylinder Nuts & Cylinder Head Nuts & Washers Kit for Yamaha YZ125 YZ250
(7) M8 head nuts, (4) M8 flange nuts, (4) M10 flange nuts, and (7) M8 copper washers. BOLT 2 Stroke Cylinder & Cylinder Head Nuts Kit. Head nuts are attractive zinc plated cap nuts. Will fasten cylinders onto either M8 or M10 studs.