Bike thieves can Fahgettaboutit, engineered to keep your bike safe even in the toughest neighborhoods Six sided 14mm chain made of 3+ manganese Includes maximum security New York Disc Lock with 15mm MAX-Performance steel shackle Hardened double deadbolt locking for extensive holding power High security disc-style cylinder with reinforced anti-drill, anti-pull protection system 3 keys (1 w/light) 14mm 3`6`/106.7cm Key Blk 10 of 10UPC/EAN/GTIN: 720018999485