Giant Surelock Protector 2 Ls U Lock

13mm ultra hardened steel The Giant Surelock Protector 2 DT is a tough lock constructed from 13mm ultra hardened steel, featuring a X2p Double bolt locking mechanism. Included is an all tube QR mounting bracket for 24-40mm tubes, to make transport and storage of the lock when not in use an easy task.  13mm ultra hardened steel bar X2p double bolt locking mechanism QR mounting bracket Description by Mike, Rutland Cycling Web Team.