• Designed for visually indicating the relative crankshaft and piston position at top dead centre • Insert the tool and adjust accordingly so that it contacts the dome of the piston before it can pass through TDC • Fine-tune by eye or with degree wheel until actual TDC is reached • Ideal for camshaft timing in addition to the timing marks • POM tip prevents piston damage • Thread size: M12 x 1.25 Type: Piston Tool