Bottle Stopper Combo Chuck with 3/8" Threaded Stud 1" - 8 TPI
HINT: After drilling the hole in your project, use a 3/8” coarse machinists tap to cut the threads. It’s faster and easier than using the threaded stud to form the threads.
Requires a 23/64” hole to mount project. USE: PK-1513 Bit