Master Lock Trailer Hitch Coupler Lock, Keyed, RV Lock, Black 379ATPY

Customers find the trailer lock easy to put on and take off, with good solid construction and clean appearance. They appreciate the peace of mind it provides, with one customer noting it serves as a deterrent to potential thieves. The security and durability aspects receive mixed feedback - while some find it ultra-secure and sturdy, others report it jamming and breaking easily. The fit and key availability also get mixed reviews, with some saying it fits most hitches and comes with multiple keys, while others mention a loose fit and no keys at all.