Trimax TCU1572 The TCU1572 is a max-dual force U-shackle locking cable (6 feet long x 15mm diameter) featuring the exclusive TRIMAFLEX Quadra Braid Cable. Bringing the best of both worlds, the TCU1572 provides the security of a mini U-lock and the versatility of a cable all into one versatile product. The TCU1572 is ideal for securing motorcycles, bicycles, ATVs, watercraft, ladders, construction equipment, trailers and much, much more.