Applications: Suitable for Detroit Crude Oil engine Series 60. Similar to J-44706. (NOTE: need drill it out using a cobalt bit at 7/16inch and then drill it again at 1/2inch. Drill from the bottom so the bit doesn't wobble and screw up the 12 point.)Nice Design: 1. 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. 2. Radius corner design - to extend the life of fasteners. 3. Extra-deep broach accommodates longer fasteners. 4. Stepped outside diameter for proper clearance and access to the fastener.Advantage: High-contrast permanent laser-etched size markings are easy-to-read, even in low light.Function: Used to tighten the rocker nut to OE specifications.Premium Material: Crafted from high standard Material for great durability and anti-corrosion, providing an unparalleled long lifespan.Condition: NewManufacturer Part Number:J-44706Application: for Detroit Crude Oil engine 60 Series Rocker Arm Shaft SocketReplacement: Alternative to J-44706, Superseded From J-36003-AFunction: This deep-well 12mm socket is used to torque the rocker arm nut to OE specification and has a stepped outside diameter for proper clearance and access to the fastener.Colour: As ShownMaterial: metalPackage Contents:1 x Rocker Arm Shaft SleeveOnly the above package content, other products are not included.Note: Light shooting 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.