Electric Martini
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Master Lock Adjustable Coupler Lock
What we like about this Coupler LockThis Master Lock Adjustable Coupler Lock features a tamper-proof lock for increased security. The pin is notched in 3 locations. Simply slide the lock to the appropriate notch position and lock it in place. Virtually unpickable this is an inexpensive way to protect your trailer and frustrate would-be thieves. Stainless steel construction offers a corrosion-resistant body. Fits any standard coupler and adjusts to 5/8 1 or 2 inches.