McGard 74049 Marine Single Outboard Motor Lock Set (5/16"- 18 Thread Size) - Set of 1 Overall Lock Length - .750" 5/16" - 18 Thread Size 5/8" Hex Size Outboard Motor Locks Set of 1 Lock, 1 Key, 1 SS 5/16" - 18 Bolt, 2 Washers and 1 Thread Lock Adhesive