MUL-T-LOCK is a worldwide leader in the development, manufacturing, and marketing of original design high quality, high security key control products for Residential, Institutional, Commercial, and Industrial/OEM applications. All MUL-T-LOCK products are made with the highest quality and most durable parts available. This gives MUL-T-LOCK the confidence it needs to extend a lifetime warranty to all its customers.

Based upon a vision of total product integration, MUL-T-LOCK has developed a sophisticated, unique access control system. All Products are designed to defend against almost any attempt at forced entry, while MUL-T-LOCK's patented key control system protects against unauthorized key duplication.

MUL-T-LOCK products exceed the toughest industry standards for pick and drill resistance.

Designed to stand up to the most determined attempts at forced entry, MUL-T-LOCK will never let you down. MUL-T-LOCK products exceed many United States and International qualifications against physical attack. All MUL-T-LOCK products are designed with pick and drill resistance. Hardened steel inserts are strategically placed in sensitive areas to resist against drilling attempts. Specific parts are reinforced with some of the strongest materials available to resist tampering and forced entry. MUL-T-LOCK’s advanced design of telescopic pins (Pin within a Pin) will resist to most determined attempts at picking.

Most locks are made with inferior material, which can be drilled, pried, and tampered with using minimal efforts to force open almost door. Most cylinders are not made to resist picking. With specialized pick sets readily available through mail order catalogs and the internet, just about anyone can get specialized tools and instructions on how to pick open almost any lock cylinder.