With 180 years of manufacturing expertise, an exclusive Yale design, and rigorous testing, the Yale Brass Closed Shackle Padlocks have been built with you in mind. Suitable for a garden shed, gate, or any other outdoor high-value items you want to keep safe and secure. Our padlocks come in 2 different sizes, with a heavy-duty cover for protection against corrosion and a boron closed shackle for enhanced security. --Heavy Duty Cover For Protection Against Corrosion. --Boron Closed Shackle To Prevent Cutting. --Tested To En 12320:2012 For Different Forms Of Attack Such As Cutting, Pulling And Twisting Of The Shackle. --Tested Up To 96 Hours For Corrosion Resistance To Ensure Protection Against Weather Conditions. --Tested To 10,000 Cycles (Opening And Closing) For Optimum Performance. A 46mm B 20.8mm C 20.4mm D 7mm E 20mm F 70mm