BumpStop^® Expands a Legacy of Advanced, Innovative Hard-line Security Solutions.

For nearly a century, Master Lock and American Lock have led the industry with advanced security options — now strengthened with exclusive BumpStop technology. Other cutting edge locking systems range from NightWatch® deadbolts and solid-body steel, brass and aluminum padlocks, to Edge™ key control, which eliminates unauthorized key duplication.

All of which enable you to achieve a level of security greater than ever before.