Cisa 50mm Master Keyed Solid Brass Padlock Set of 6 Real security padlocks used in mines and municipalities - When it comes to durability and reliability, Cisa guarantees the best performance over the long term offering a 10 year guarantee. - Designed for high use in residential and commercial applications. - NICKEL plated, Carbon-Nitrogen hardened steel shackle for strength and anti-corrosion. - Highly Pull Resistant Shackle The double locking shackle means it is virtually impossible for the shackle to be pulled out of the padlock body. - Master Keyed means a master key will open all padlocks and each padlock has its own key that will not open any of the other padlocks Dimensions: - Padlock width: 50mm - Shackle Diameter: 8mm - Distance between shackle and padlock body: 28.5mm