Tru-Guard, 1-9/16", 40 mm Wide, Laminated Steel Padlock With Thermoplastic Cover For Weather Resistance, 7/8" Long Hardened Steel Shackle For Resistance To Cutting & Sawing, Shackle Dimensions 5/16" Shackle Diameter, 7/8" Height, 13/16" Width, Uses Master Lock Key Blank K1 Box Or Ilco M1-1092 TV #182-444, Carded.