Proform 66901 Crank Shaft Turning Socket For Chevy<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Designed for 1965-1992 Chevrolet Small Blocks， V6 and 4-cylinder engines</li><li>1.255 inside diameter with a 3/16" keyway</li><li>Non-marring aluminum</li><li>Use 1/2" breaker bar or drive ratchet</li></ul></div><img src="http://ecx.images-amazon.com/images/I/315P0P43E6L.jpg" noproxy>