387 TRAILER COUPLER LOCK

Master Lock 387 King Pin Lock for Semi-Trailers, RV and Fifth Wheel Trailer 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. Model # 387, 387KA Key Option Keyed Different, Keyed Alike Color Option Red Secures the king pin of semi-trailers, RVs and other fifth wheel trailers 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 BEST USED FOR: SEVERE USE Trailers, Trucks, & Towing