Brady 104578 Aluminum Padlock is manufactured with solid aluminum body and hardened chrome-plated steel shackles, our padlocks are amazingly lightweight and rugged. Locks are chemical and corrosion resistant and feature 6-pin cylinders for better tamper resistance. Padlocks may be purchased keyed different or keyed alike and are shipped with one key per lock. Keep your locks organized and easy to access with brady's lock centers sold separately. Lock Label for easy in identification are also available and sold separately. Special Features are Compact and most tamperproof. Lock Body Size measures 1-1/2" width by 1-3/5" height by 3/4" depth, Shackle Diameter is 1/4", Shackle Clearance is 1.5", Keyed different key style, Brown color.