Vise Brands Desmond Stephens/Simplex Model 61S Vise Details Manufacturer Desmond Stephens/Simplex Model 61S Country of Origin USA Weight 145 pounds Jaw Width 6.25" Jaw Opening 10.5" Anvil? No Replaceable Jaws? Yes Pipe Jaws? No Base Type Swivel Swivel Jaw? No Screw Covered Quick Release? No Category Machinists Notes Patent Date Images (External Link)