Built with the same quality materials used in PEAK's original Rotary Vise, PEAK's Tube Fly Vise maximizes convenience and minimizes set-up time. This vise uses a chuck with no collets, eliminating the need for changing out parts. The chuck will accept pins and metal tubes up to 1/8" in diameter and works perfectly with PEAK's custom ground pins, which have a shallow sloped shoulder for capturing the tubing. No additional pieces are needed, simply push the tubing up to the shoulder until it is held snugly. The vise comes with two pins, '1/32" and '1/16", other sizes are available separately.