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.- 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