Spark Plug Socket Tool Type Rocker Arm Shaft Socket Application Torque the Rocker Arm Nut to OE Specification Use Stepped Outside Diameter for Proper Clearance and Access to the Fastener Overall Length 5 in Overall Width 2 in Number of Pieces 1 For Use With Detroit Diesel Series 60 engines J-44706 Includes Socket Socket Sizes 31/64 in Sockets Included Deep-Well 12 mm Socket Vehicle Make Detroit