Kasp 790 series u shackle lock 15x260mm kasp k790l260 this u shaped bike lock from kasp has steel body and a 12mm steel shackle which has been specially hardened to offer greater resistance to attack by saw or bolt cutter the shackle is secured by a double bolted locking mechanism and a 5 pin dimple key cylinder to thwart even the most determined potential thief kasp k790l260 u shackle bike lock 13 x 260mm