Moose Offroad Top Dead Center Tool - 10-12 mm - 210-1512

Can be used into conjunction with a dial indicator (not included) for accurate Top Dead Center measurements. Easily determine true Top Dead Center when setting valves, timing and other top end work. Uses O-rings to prevent shaft from falling into combustion chamber. Used for both 10 mm and 12 mm spark plug holes. Part is used for 14 mm thread insert.