This tool will never scratch a ring since the “V-block” is nylon and the single jaw is in highly polished stainless steel. The handles are covered in
Brass Tip Nose Ring Bending Pliers-210698602404
The Beadsmith Wire/Ring Bending Pliers, 7 inches (180mm), White PVC Grip, Spring Action Handle, Tool for Bending and Curving Wire, Rings, rods and Metal Strips
NYLON JAWS: The curved jaws feature a smooth surface, ideal for working with wire. USES: Forms consistent angles, bends and curves in wire, sheet
The Beadsmith Double Nylon Jaw Ring Bending Plier, 5.5 inches (140mm), Black PVC comfort grip handle, no spring, for protecting wire when bending
Ring Bending Plier - TP192
Nylon Jaw Bracelet Bending Plier | Jewelry Making Tools
Large Ring Bending Plier 46.0062
PLIER,RING BENDING,NYLON V-JAW,140MM, - Bj Oberholzer
German Style Ring Bending Pliers Jewellery Supplies - Pod Jewellery
PLASTIC RING BENDING PLIERS