These Faithfull clamps offer a low cost alternative for light to medium-duty clamping tasks. Constructed from a 'U' box section aluminium extruded bar and fitted with a cast head and foot, the construction design makes these clamps both lightweight and strong. The quick-release slide enables the clamping capacity to be changed in an instant, with adjustment slots situated at 25mm (1in) increments along the bar. Deep cut Acme threads on the mainscrew and a tommy bar combine to provide a quick and powerful clamping action.