Secures the king pin of semi-trailers, RVs and other fifth wheel trailers
Keyed Alike - order multiple locks to open with the same key or order to match other locks with the W1 cylinder
Renders bolt cutters useless
High grade aluminum is lightweight while providing high security
High visibility red body and durable flag alert drivers that lock is attached
Includes an integrated No. 5 lock with all of its security and keying flexibility
The Master Lock No. 387NKA features a high grade aluminum king pin lock offering lightweight but high security for semi-trailer, RV, and fifth wheel trailer king pins. The visible red body and durable flag alert drivers that the lock is attached. Each king pin lock includes an integrated No. 25 lock providing additional security and keying flexibility. The Limited Lifetime Warranty provides peace of mind from a brand you can trust.