RING HOLDER CLAMP INSIDE RING HOLDING TOOL JEWELERS HAND VISE JEWELRY MAKING (E4) RING HOLDER CLAMP INSIDE HOLDING HAND TOOL VISE JEWELERS Ring holder clamp is an expanding clamp that holds round objects, rings from the inside allowing to do the work on the outer diameter or surface of the ring. Clamp - Expanding Split Wood Type is used to hold round circular parts, rings and bands. Used for Polishing Grinding work on the outside surfaces of rings. Clamp is shaped to hold comfortably in the palm of your hand.