Jeweler Aluminum Universal Vise Clamp Hold Mandrel Holder Jewelry Oval Regular Universal Vise Clamp Hold 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