Excell Padlocks are packed full of extra tough features and patented technology. This 51mm laminated steel padlock has a weather tough thermoplastic body, dual ball bearing locking, which makes this padlock extra tough to pull/pry open, a resilient 4-pin tumbler cylinder and a patented octagonal boron-carbide shackle, which is exceptionally hard to cut. The shackle is also extra long, enabling use in a wider range of applications