Master keying software for

Best A4

Best A4 key blank
Best A4 pinning chart

Have an existing Best A4 master key system you need to expand on, try MK Express.

Build your Best A4 master key system quickly and simply with this easy to use locksmith software.

MK Express will create the most flexible Best A4 master key system, with out the doctorate in hieroglyphic quantum plumbing.


Axis #1: Interchangeable Core
Number Cuts: 7
Deepest Bow Cut: 5
Depth Progression: 1
Smallest Master Pin: 1
Max Adjacent Cut Difference: 5
Cut Symbols: 012345
Stack Height: 14
Control Sleeve: 7
First Sleeve Chamber: 1
Last Sleeve Chamber: 7

Click here to see the built in list of locking hardware that MK Express can create master key systems for