Compact quick release engineers vices have special jaws & slide design to provide extra space for holding irregularly shaped work. Ideal for fitting & filing. An integral anvil permits hammering. The reinforced body & slide, large diameter main screw & through bolted jaws invest these vices with the working strength & resilience to withstand the most demanding work. Available in four sizes up to a maximum of 8in jaw width. Jaw Width. 4.1/2in.