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Advanced Master Keying Skills
Author: by Don O'Shall, Greg Brockway and John Truempy
Item: do-amks-1  Price: $60.00  Add to cart    

This book is NOT for the beginner.

The skills taught in this book should only be used by locksmiths who are well grounded in basic and intermediate master keying techniques and fully comfortable with the Standard Progression Format (SPF) charts and the development of standard master keying systems using them.

But if you are ready for the next level, THIS BOOK IS FOR YOU!

by Don O'Shall, Greg Brockway and John Truempy