General description Record Irwin No.23 Fitters Vice is a medium-duty vice designed for industrial fitting and training workshops. It is suitable for a variety of tasks, ranging from small fitting and filing work to the assembly and fitting of larger components. Technical specifications Jaw Width: 115mm (4 1/2 in) Hardened steel replaceable jaw plates Lever adjustment for instant movement of the jaws Half-nut mechanism working in conjunction with the threaded screw Quick release feature