TAURISH Pin Vise Holds Micro Drill Bits from 0-3/32" (0-.100", 0-2.5mm). Rotating top for ease of use. includes 2 collets to adjust for various size micro drill bits and reamers. Pin Vise Holds Micro Drill Bits from 0-0.100" (0-2.5mm). Overall Length: 3" (75 mm) Black Oxide Hardened steel collets for superior grip on small bits Knurled body for turning with fingerd Wood ball swivel head for comfort while applying pressure