Wilton 21300 744 4-Inch Jaw Width by 4-1/2-Inch Opening Mechanics Vise Jaw width: 4" Jaw opening: 4-1/2" Throat depth: 3-7/16" Pipe jaw capacity: 1/4-2" Jaw width 4" Jaw opening 4 1/2" Throat depth 3 7/16" Pipe jaw 1/4' - 2"