Features: Applicable Model: Flywheel locking tool for Duramax 6.6L engines with Allison automatic transmissions, for Duramax 2500 3500 4500 5500 trucks. Design: This tool is designed to accurately secure the flywheel position, ensuring stability and reliability during replacement or adjustment. Material: Made of strong metal, this tool set is sturdy and robust, resistant to wear, tear, and corrosion, capable of handling high loads and long-term use. Equipment: Equipped with a 36mm 3/4in socket, the flywheel locking holder simplifies the repair and replacement of the flywheel, meeting various maintenance needs. Performance: Using this flywheel locking tool helps manage flywheel operation and enhances driving stability. Specification: Item Type: Flywheel Locking Tool Material: Metal Fitment: For Duramax 6.6L engines with Allison automatic transmissions For Duramax 2500 3500 4500 5500 trucks Package List: Flywheel Locking Tool Kit (4Pcs)