The Irwin Record vice is rigid and robust. The body and sliding jaw are cast from close grained grey iron which is CNC manufactured on all friction surfaces for a smooth reliable action.
The jaws, handle and main screw are steel, the latter having a two-start rolled acme thread to speed the jaws from fully closed to fully open with a minimum of winding.
The failsafe stress bearing components help prevent damage to the vice mechanism. This vice features replaceable steel jaw plates, an integral anvil, and a steel mainscrew with two-start acme thread for a fast smooth operation.