Easy-to-Read Identification System

This thread checker set offers clear ways to identify sizes quickly:

• Laser-engraved markings on each gauge
• Screen-printed labels on the foam organizer

Each size is clearly matched to its corresponding slot, making thread identification faster, easier, and more intuitive. Each gauge is securely held in a precision-cut foam tray to keep sizes organized and protected.

SAE / Standard Thread Sizes (Blue) — 27 Sizes

• 1-12; 1-8; 3/4-16; 3/4-10; 5/8-18; 5/8-11; 9/16-18; 9/16-12; 1/2-20; 1/2-13; 7/16-20; 7/16-14; 3/8-24; 3/8-16; 5/16-24; 5/16-18; 1/4-28; 1/4-20; 12-24; 10-32; 10-24; 8-32; 6-40; 6-32; 5-40; 4-40; 2-56

Metric Thread Sizes (Red) — 23 Sizes

• M24-3; M24-2; M20-2.5; M20-1.5; M16-2; M16-1.5; M14-2; M14-1.5; M12-1.75; M12-1.5; M12-1.25; M10-1.5; M10-1.25; M10-1.0; M8-1.25; M8-1.0; M7-1.0