Giant Surelock Protector 2 DT is a tough 13mm ultra hardened steel lock with X2p Double bolt locking mechanism and an additional 10mm x 120cm cable for extra security. FEATURES - 13mm ultra hardened steel bar - Lock: X2p Double bolt locking mechanism - M-Key cylinder - Integrated dust cover - 4 standard keys and 1 LED key - All tube QR mounting bracket 24-40mm tubes - Additional 10mm x 120cm cable