Granit X-Plus U-Locks are recommended for securing bikes in areas with a high risk of theft. Strong square parabolic shackle (patented) with very high protection against attacks with bolt cutters, car jack or saws The ABUS-X-Plus cylinder offers the highest protection against intelligent opening methods Double bolted shackle is extremely secure in the patented ABUS power cellSecurity Rating: 15 of 15 Item SpecificationsLock StyleKeyed