Matlock: Heavy Duty Hadened Steel Combination Padlock - 51mm Designed to provide medium to maximum security for indoor and outdoor use on store front and factory gates, large toolchests, construction site storage etc. This heavy duty padlock has a hardened steel body, black e-coating, molybdenum shackle and 4 digit combination. MPN: RB52R EAN: 5036140244061 Heavy Duty Hadened Steel Combination Padlock - 51mm Attributes: Body Colour: Brass Body Material: Hardened Steel Body Width: 51mm Lock Type: Open Shackle MFR Part No.: RB52R Overall Width: 51mm Pack Quantity: 1 Security Rating: 6 Shackle Diameter: 7.93mm Shackle Material: Molybdenum