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High Security Locks

 Bump This!

Although, the subject of “Bump-Keying”, also known as the “999 Method” is often presented as a cutting-edge cylinder manipulation technique and has recently surfaced as “breaking news”, the practice has been familiar to Mul-T-Lock and the locksmith industry for many, many years now. Many present the method as an undetectable and simple way to bypass high security; this, however, is not the case, and Mul-T-Lock’s high security cylinders are prepared to resist this type of attack. Our high security products are designed to defend against a vast array of manipulation techniques including bumping. On real world applications, and we confidently assert that unauthorized entry will not be gained by anyone under such conditions. Proof of this is in the fact that not one supposedly successful bumping attempt was performed with a non-treated Mul-T-Lock cylinder straight from the shelf of our factory and onto a customer’s door.

Think your house is secure watch this:



1011 Knob W/Out Key Bypass

1011 Simplex Knob W/Out Bypass


1031 W/ Passage Option

1031 W/ Passage Option  NO Key Bypass


6000 Residential Knob


Government Locks

X-09 Combination Lock


High Security Cylinders


High Security Deadbolts


High Security Knobs


High Security Levers


 L1011 Lever W/out Key Bypass


L1031 W/ Pass Option. NO Key Bypass


 Lockey Locks

1150 Heavy Duty Lever Pass Function 2 3/8 or 2 3/4 Backset


 7100 Residential Pushbutton Lock

900 Series Auxiliary Locks


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in PDF F

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