American Lock A2500 2-7/8" Shackleless Solid Steel Flat Back Padlock Lock Hockey Puck Style, Removable 6 Pin Solid Brass Re-Keyable Cylinder, Shackleless Padlock Provides Maximum Strength, For High Security, Gates, Trucks & Heavy Security Hasps, Freight Line & Automotive Security, Resistant To All Weather, No Springs To Rust Or Jam, No Outside Shackle To Cut Or Saw, Solid One Piece Steel Case, 2 Keys Included, Uses Key Blank Ilco # TV #.