Hand Held Chuck Tool is a collet type holder for wire, drills, rods and tubes. Hand tool comes with a set of 7 collets. Holder comes with seven collets, ranging in size from 0" to 13/64". Tool will firmly hold, Rods and wire, tubes for stone setting without collapsing. Handle holds the part firmly with its chuck collet locking nut. The collets have 3 slits that apply even pressure, without collapsing and damaging tubes and more delicate materials. Collets fit into handle and are secured with screw chuck head.