2 Ring Clamps For Ring & Jewelry Repair5 1/2" Ring Clamp. This is a new ring clamp. This well made clamp makes working on rings easier. The handle features a cushion grip with excellent properties, maximum support, flexibility, lessens fatigue and increases productivity. The jaws can open up as large as 3/4" (19 mm). It measures approximately 5 1/2" x 2 1/4" (171 x 56 mm) 7 9/16" Ring Clamp. This is a new ring clamp. This is a hand held ring clamp that gives you a durable and a reliable way to hold rings for stone setting, filing, finishing and polishing. It has replaceable jaw inserts that hold work without marring or slipping. The jaws open up as large as 9/16" (14 mm). It measures approximately 7 9/16" (192 mm) long.