A pin vise, or twist drill, is a specialized tool designed for use on small scale miniatures, models, dollhouse miniatures, handmade beads, and more. The pin vise from Hobby Tool Supply features a removable, reversible collet that allows you to use drill bits as small as a #80 up to bits with a 1/8" shank. The base of the tool spins to make one-handed use a breeze. The textured shaft provides excellent grip.