Features: 1. Application: For Detroit Diesel 60 Series Rocker Arm Shaft Socket. 2. Direct Replacement: Alternative to J-44706, Superseded From J-36003-A. 3. Function: 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. 4. Superior Material: Crafted from high standard Steel for great durability and anti-corrosion, providing an unparalleled long lifespan. 5. Satisfaction Guarantee: We aims to provide the best service for our customer, if you're not 100% satisfied with our item, simply return it for a full refund in 60 days. We support 12 month's Warranty. .