MUL-T-LOCK are designed to stand up to the most determined attempts at forced entry. MUL-T-LOCK products exceed many United States and International qualifications against physical attack; and 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.