PROPELLER LOCK (MCGARD LOCKS) MerCruiser Alpha I, Bravo I (Incl. X & XR), TRS, Vazer, OMC Cobra and King Cobra 3/4-16

The best protection available against costly propeller theft. Once installed the McGard propeller lock offers 24 hour protection during use, storage and transit. A free-spinning collar will turn if attacked by gripping tools without loosening the lock. Constructed of naval brass and hardened stainless steel for maximum security.