DuraSafe E-LOCK MAX Swing Arm Combo A marine electronics unit mounted on a RAM Mount is easily stolen by unscrewing the knob of the mount and pulling out the unit and its bracket. With this 4-piece, DuraSafe 2-E-LOCK'sand 2-Swivel Mount Locks set, protection against marine electronics theft is achieved. These locks replace the factory knobs and, once locked, prevents removal. Fits Select RAM Swing Arm Mounts: RAM-109H, RAM-109HU, RAM-109V and RAM-109VU Can be keyed to all of our other locks Compact Easy to install Prevents theft Reversible key for easy insertion Save time as well as wear and tear on equipment Eliminates the hassle of uninstalling and reinstalling equipment Piece of mind knowing your electronics and mount are secure Made of marine grade materials Additional Information Package Weight: 1# 2oz Package Dimensions: 8” x 5.5” x 2” UEL50 Lock Width Closed: 2” Lock Length Closed w/Key: 3” Lock Diameter: 1.5” Swivel Mount Locks Lock A, Male Thread 5/16” - 8 x 1.25” Lock B, Female Thread 3/8” - 16 Lock Width 2.5” Lock Depth 2.5” Lock A Lock Depth 1.5” Lock B Additional Information:Dimensions: 10 x 7 x 4 inchesWeight: 0.68 kg