Bolt Motorcycle Hardware (DPWM10.145-10) M10 x 14.5mm Banjo Bolt Crush Washer, (Pack of 10) Pack of 10; M10 aluminum drain plug sealing washers Soft tempered aluminum compresses to seal in fluids Most OEM's recommend replacing sealing washers at each oil or coolant change Dimensions ID: 10mm; OD: 14.5mm Meets or exceeds OEM specifications