FEATURES: X2P double bolt mechanism locks the shackle on both sides Bump-proof Z-cylinder resists picking, pulling, or drilling Hefty 13mm hardened steel shackle resists cutting, jacking, and prying Rounded design and centered keyway eliminates pry points Rubber coated crossbar and molded end caps protect bike frame Universal mounting bracket included 5 laser-cut keys, one with LED SPECS: Standard size: 4.5" x 9" Cable: 4' long x 10mm thick, made of braided steel with vinyl coating and with cinch loop on both ends