The OEMTOOLS Flywheel Locking Tool Locks is the diminutive toolset that acts as a second pair of hands during your transmission projects on Duramax vehicles with Allison automatic transmissions. A flywheel lock will keep your flywheel in place when you need to remove your harmonic balancer or replace your water pump without having to take equipment off of the vehicle. The ability to stabilize your flywheel is one small step that will save you invaluable time and simplify your work processes. Each kit includes 2 toothed flywheel locks, one with a fastener and one without, to accommodate Duramax 2500—5500 vehicles. The included 36MM socket will come in handy for repairs that require the removal of the harmonic balancer bolt. A space-saving alternative to the flywheel cage, this low profile set of tools will make your time spent under the hood that much easier without overcomplicating your workflow. For a helping hand, consider the OEMTOOLS Flywheel Locking Tool Set.