Aluminum Universal Clamp Holding Mandrel Bench Vise Jeweler All Purpose Clamping Universal vise clamp Aluminum vise can be mounted anywhere on top, under, and side of work bench Will hold following mandrel sizes: -Regular: 1/2'', 1'' -Rectangular: 1-1/16'' - 1-5/8'' -Special: 7/8'' oval and teardrop Aluminum plate weight: .60 lbs each; Aluminum plate diameter: 4'' Quantity: 1