Mul-T-Lock®’s
High Security cylinders have a special 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 patented Mul-T-Lock plug has a special
structure. When the top and bottom pins, plug and body meet,
a three-dimensional shear line is formed, creating an almost
perfect spherical shape. Steel inserts enhance anti-drilling
resistance..
These
features provide an added security dimension,
amplifying the Mul-T-Lock cylinder’s pick-and-drill
resistance for High Security needs.
When master keyed, additional side pins or back pins can
be incorporated.