ABUS 83/45-300 S2 Schlage 45mm All Weather Solid Brass Rekeyable Padlock with 1 Inch Shackle, Zero-Bitted Extreme corrosion resistant plating Shackle made from hardened steel Double bolted: both sides of the shackle are secured by bolts or balls- increased protection against attacks and manipulation Master key available Patented Z-Bar for 2-in-1 function: converts key-retaining to non-key-retaining and vice versa within seconds