Our compact 12 in 1 key gauge Decodes the following keyways: Schlage, Kwikset, Yale, Arrow, Weiser, Master, Westlock and SFIC A2. Slide a key in and instantly find the appropriate pin. It also includes several other functions: Kwikset C-Clip Manipulation Tool (A) Schlage F-Line C-Clip Removal Tool (B) Retaining Pin Depressor (C) Universal C-Clip/E-Clip Removal Tool (D) FAQsQ: What is the 12 Function Key Decoder and Multi-tool used for?This tool is used by locksmiths to decode keys, measure key cuts, and perform essential tasks like turning plugs, measuring pins, and identifying keyways.Q: What makes 12 Function Key Decoder and Multi-tool ideal for locksmiths?Its multifunctionality replaces several individual tools, saving time and space. It's a must-have for quick diagnostics, key decoding, and lock servicing.