Somta Series 541 - HSS Straight Flute Short Hand Bottom (Finishing) Tap UNC 5/16" x 18 TPI Insize Groove Micrometer 50-75mm Range Series 3287-75A it is designed for easy High speed steel HSS 3208-100B Insize Limit Micrometer 25-50mm Range Series 3235-50mm

it is designed for easy use and accurate measurement of screw thread pitch diameters

Time-Saving Installation: With the included STI tap and installation tool

Easy to use and built to last

These holders provide reliable clamping and machining accuracy

Chuck Connection: JT6 (Jacobs Taper 6)

Somta Series 541 HSS Straight Flute Short Hand Bottom (Finishing) Tap UNC 5 16" x 18 TPI Insize Groove Micrometer 50 75mm Range Series 3287 75A it is designed for easy High speed steel HSS 3208 100B Insize Limit Micrometer 25 50mm Range Series 3235 50mm it is designed for easy use and accurate measurement of screw thread pitch diameters Time Saving Installation: With the included STI tap and installation tool