Home High Security and Challenge Locks (709) Brent’s “D” Challenge Lock

(709) Brent’s “D” Challenge Lock


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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. I have an old 6-lever lock – even has the key attached to it (doesn't work though) – I have been trying (and failing) to pick it open for years. How do I send a lock to you (assuming you'd like to take a crack at it?).

  2. The 'Lane' locks like most Aussie locks use a standard Lockwood keyway.
    LW4(5 pin) or LW5(6 pin) key blank. About the most common keyway in the place. There's a few others, but none come as close to being this popular,especially not for the more generic manufacturers. But even most ABUS locks sold here have the same keyway.

  3. I've been watching you for a while and have not seen pin in pin before. You may have gotten lucky but it's also possible your skills are such that you do stuff by instinct that you may or may not be aware of. good stuff.

  4. Great picking, Bill!
    Wow, what a great lock! Top pin in pins wouldn't make too much sense without bottom ones though. Really love it! Does Brent have also have a Youtube channel or account in one of the larger forums?

  5. I don't think those pin-in-pin work in standard cylinders like they do in dimple locks.
    Have you worked with just one of them, alone, in the cylinder to see if they make any difference??

  6. Great picking but it rally bugs me that you and others are picking profile locks upside down all the time.
    Being a locksmith I always vise them as the would be as they are out in the wild

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