Plumbers rejoice! Never be stumped by an odd seat size again. Quickly identify thread pitch & diameter for 24 of the most common Faucet Seat sizes ranging from 6-32 to 11/16-22. This aluminum gauge features permanently stamped thread sizes and cleanly tapped holes to ensure an accurate measurement every time. Carry in your tool box or use the pre-drilled hole for peg board mounting. This quality gauge is a must-have time and money saving tool for both the professional and DIY"er alike. 08-9411 Size Specifications: 6-32, 8-32, 10-32, 10-24, 7/16-20, 7/16-24, 7/16-27, 1/2-20, 1/2-24, 1/2-27, 33/64-18, 17/32-24, 9/16-18, 9/16-20, 9/16-22, 9/16-24, 9/16-27, 5/8-18, 5/8-20, 5/8-24, 5/8-27, 21/32-18, 11/16-20, 11/16-22