The DXXL consists of maximum-security D Lock and heavy-duty loop-end chain, built to withstand the toughest of attacks and carrying a Sold Secure Diamond rating. Our maximum security Hiplok DX is a D-lock with a 14mm premium hardened steel shackle with double locking anti-twist tabs. The lightest Sold Secure Diamond rated D-lock, the DX features Hiplok's patented CLIP + RIDE system for easy carry-on bag straps and belts – no bracket required. Includes 3 x coded replaceable keys. Our maximum security heavy-duty chain features a loop end to give extended locking length when used with a D-lock, making it suitable for multiple bicycle lock up.