Red Hound Auto 20 Stainless Steel Armor Disc Padlocks Trailer/Self Storage Locks Keyed Alike 20 Heavy Duty Premium Circular Disc Padlocks with 2 Keys per lock Heavy Duty Corrosion Resistant Stainless Steel 2-3/4" (70mm) Diameter Lock Resists sawing or cutting with its stainless steel body and hardened steel shackle Premium Quality Red Hound Auto Stainless Steel