The Giant Surelock Protector 1 LS is a very tough U-lock.  In fact, it's approved Gold Sold Secure - the highest rating possible, meaning nearly all bike insurers will accept this lock on their approved locklists.At the heart of the U-lock is a 14mm ultra hardened steel bar that provides excellent resistance against a range of different attacks like sawing and cutting. Zinc caps on each side of the base also provide resistance against hammering attacks too.Weight - 1.75kg (includes keys & fittings)Features:14mm ultra hardened steel barLock: X4p quattro bolt locking mechanismZinc capsM-Key cylinderIntegrated dust cover4 standard keys and 1 LED keyAll tube QR mounting bracket 24-40mm tubesSold Secure