Master Lock is recognised around the world as the authentic, enduring name in padlocks and security products. Founded in 1921 by Harry Soref in Milwaukee, Wisconsin (United States). Master Lock invented the Steel laminated Padlock in 1924, then the Combination Padlock in 1935. Master Lock is the largest padlock manufacturer worldwide, with the widest range on both the professional and domestic markets.
Each year, thousands of accidents occur during the repair or servicing of industrial machinery and equipment. Most of those accidents are due to power sources that have not been neutralised. Master Lock provides Safety Lockout / Tagout devices to prevent such accidents.