Giant Surelock Protector 2 LS is a tough 13mm ultra hardened extra long steel lock with X2p Double bolt locking mechanism with 4 standard and 1 LED key.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 tubesSizes:- Dimensions: 115mm width 292mm long