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

Model No. 387
Original price $141.13
Current price $115.46
Quantity Price
1-23$115.46
24+$105.85

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.

  • 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