Home High Security and Challenge Locks (1242) Master Lock’s 9 = ZERO!

(1242) Master Lock’s 9 = ZERO!


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My vises are made by Panavise, a U.S. Company.  The one with the wide jaws is the model 350.  The smaller one is the model 301. Both have the 312 Base mount – www.panavise.com



  1. More of a question. When you insert security pins does the size matter and does the way you put them in effect the lock.

  2. I’ve never needed more than two “zips” to open a Master Lock. Kinetic attacks seem to be as quick or quicker than keys with these faux locks.
    Every now and then I’ll be on a job where they use Master Locks to make it look like the gang boxes are secured. 30 seconds with the Bogotas set out of my wallet, and the very next day we get an Abus (usually the Granit), Abloy, once even a Mul-T-Lock C series.
    You know, genuine locks.

  3. they are a bitch to impression , car ignitions are easier than Master locks …. local thrift store lady gave me a bunch without keys …. got 5 done so far. burned thru alot of blanks, she’ll be getting them back so she can sell them and ive gotten to relearn impressioning after 15 or so yrs …. my eyes have not gotten younger

  4. Security rating 9 and they still don't do security pins… But the electrical lockout padlocks they make are filled with spool pins. Go figure.

    1. Yeah the LOTO plastic locks have security pins. Go figure!! I’d guess it’s more of a liability issue. I remember someone in The People’s Republic of California was convicted of murder for switching on a tagged out circuit breaker and killing some worker, maybe an electrician, maybe not.

  5. is that number one choice for prostitutes? that kind of professional?
    I think master lock tend to have quite good physical security, I don't think anyone is likely to chew through it.
    how to slow someone down from picking a master lock….. give them the key.

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