Mul-T-Lock High Security cylinders have a special telescopic pin tumbler mechanism with external and internal pins creating an almost perfect spherical shape. Steel inserts enhance drill resistance. When master keyed, side pins may also be added to increase the number of change keys.
Mul-T-Lock Deadbolts have solid brass ring and collar, hardened steel bolt anti drilling ring, steel strike. 90° key rotation throws the bolt 1” toward the frame, interlocking two hardened ball bearings with the strike to increase jimmying resistance. They are available in single cylinder, double cylinder, and captive thumbturn.
Mul-T-Lock Padlocks have a shackle that is locked by a double ball bearing mechanism, case hardened steel body, hardened boron alloy steel shackle. The protective shutter prevents dust contamination, and drainage holes to prevent freezing.