The Zona Swivel-Head Pin Vise comes with two double-ended collets in the handle with 0′ p .109′ or 7/64′ (0 p2.7686mm)capacity range. Hexagonal head keeps vise from rolling off of work surface. Holds small tools with round shanks including drills, burs, reamers, taps, needles, scribers: 0 p.05′, .03 p.08′, .05 p.10′, and .07 p.11′. Revolving head makes drilling fast. The pin vise is 4′ long.