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Mul-T-Lock® high security cylinders have a unique telescopic pin tumbler mechanism with internal and external pins. Both the internal and the external shear lines must be aligned simultaneously in order for the plug to rotate.
The Mul-T-Lock patented plug has a unique structure.
When the top and bottom pins, plug and body meet, a three-dimensional shear line is formed to an almost perfectly spherical shape.
Steel inserts ensure anti-drilling resistance.
These features provide an added security dimension and make the Mul-T-Lock cylinder pick-resistant and drill-resistant for high security needs.
When Master Keyed, additional side pins or back pins can be incorporated.
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