OKG Small U Lock - 4 Keys, 11/16" (18mm) Dia Heavy Duty Hardened Alloy Steel U Shackle. Anti-Theft, Anti-Cut, Anti-Pry, Combined for Motorcycle Lock, Bicycle Lock, Chain Lock (No Security Chain)

Reinforced, shrouded lock shell and 16mm hardened MAX-Performance steel SHACKLE with HARDENED double deadbolt locking mechanism provides ultimate protection against hand tools, bolt cutters, saw, leverage and bolt croppers attack. High security STAINLESS STEEL disc-style cylinder with reinforced anti-drill, anti-pull protection system against attempts, e.g. picking SLIDING DUST COVER to protect from dirt, debris, corrosion and extends cylinder life 2 BRASS STEEL "I" KEYS for better ergonomics; we will ship your additional 1 new key for FREE GLOBALLY in case you lose your original 2 keys.