GJ LOCKS Union/Chubb/Yale Decoder

Manufacturer: GJ Locks
Union/Chubb/Yale Decoder
Picture of GJ Locks

GJ LOCKS Union/Chubb/Yale Decoder

One of the most simple and straightforward mortice lock decoders available, this kit covers a large range of the most popular locks in the UK.

Using milled impression keys and an innovative jig to prepare the keys, you can take a plasticine impression from the lever pack to very quickly give you the code for the lock.

No measuring or guesswork, just follow the procedure to create super-accurate reader keys every time. Then you can build the key to open the lock using the revolutionary key bit system.

This is the strongest and most durable make-up key available and overcomes many of the disadvantages of previous systems.


  • Non-destructive entry.
  • Mortice lock decoder pick set.
  • Revolutionary key bit system.
  • Front loading make-up key and improved key jig for easier decoding.

For The Lock Types Below:

  • Union 2134 + (E)                            
  • Union 2234 + (E)                                       
  • Union 2101 + 2201
  • Chubb 3U114 + (E)
  • Chubb 3U75
  • Yale (old BS)
  • Non-BS Yale 5 lever

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Product Specification

  • Application :
    British Standard Locks
  • Application :
    Mortice Locks
GJ LOCKS Union/Chubb/Yale Decoder
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