Thread gauge imperial, 22 blades
- for controlling and increasing the interior thread and outside thread
- imperial sizes
- cylindrical tapered
- leaves fan shaped arrangement
- leaves individually marked with size
- out of hardened spring steel
- For thread size: 4-4,5-5-6-7-8-9-10-11-12-13-14-16-18 20-22-24-32-40-48-56-64 speed




