Master Lock King Pin Lock for Semi-Trailers, RV and Fifth Wheel Trailer - 387

The master lock no. 387 high security king pin lock secures the king pin of semi-trailers, rvs and other fifth wheel trailers to prevent theft and deter break-in's. including an integrated padlock (no. 5), this locking device renders bolt cutters useless and the high-grade aluminum is lightweight while providing high security.