Master Lock® Towing Security Universal Trailer Coupler Lock Cat. No. 379DATML Weight 2 lbs	$25.36
Easy to install and remove, the Master Lock® Towing Security Universal Trailer Coupler Lock fits 1 7/8", 2", and 2 1/8" couplers. Its advance locking mechanism also resists picking and prying, and the keyway cover protects lock from moisture and dirt.