Applications: Suitable for Detroit crude oil Series 60. Similar to J-44706. (NOTE: need drill it out using a cobalt bit at 7/16 inch and then drill it again at 1/2 inch. Drill from the bottom so the bit doesn't wobble and screw up the 12 point.) Nice Design: Designed to drive the side of the fastener instead of the corner, because of the High-torque, 12-point socket design grips the flat sides of fasteners, not just the corners, preventing round-off. Radius corner design - to extend the life of fasteners. Extra-deep accommodates longer fasteners. Stepped outside diameter for proper clearance and access to the fastener. Advantage: High-contrast permanent etched size markings are easy-to-read, even in low light. Function: Used to tighten the rocker nut to specifications. Premium Material: Crafted from high standard Material for great durability and anti-corrosion, providing an unparalleled long lifespan. Rocker Arm Shaft Socket Manufacturer Part Number:J-44706 Application: Detroit crude oil 60 Series Rocker Arm Shaft Socket Replacement: Alternative to J-44706, Superseded From J-36003-A Colour:black Material:Metal Package Contents: 1 * Rocker Arm Shaft Sleeve Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.