The universal work holder is a very versatile tool used to securely hold items while you engrave, carve, file, or set stones into them. It has 8 movable pins to hold your work and a vice that screws open and closed to hold different sized items. It has a hardwood handle which can be removed by unscrewing it, which allows the metal frame to be held in your bench vise. Made of aluminum. Vise is 2″ (5 cm) in diameter. Overall measures 6.5 x 2 x 3″ (16.5 x 5 x 7.5 cm). If you have any questions please feel free to contact us.Please visit our store for other great jewelry and watch tools such as; Torches, Hand Tools, Crucibles, Stamps, Tongs, Borax and Much Much More! And Always, Thank You for Looking!