The Irwin Tools 5- 5" Mechanics Vise T5 is among the most popular general purpose vises for light to medium duty applications. The Vise is made of High Quality Grey Iron casting and machined to very close tolerances to withstand distortion under high pressure. The vise has a smooth, dependable action due to the long barrelled , unbreakable nut which is dovetailed into the body. The vise also features a safety stop to prevent the slide from being separated from the body. The Alignement of the mainscrew and nut reduces wear and gives long, trouble free service.Cast Iron ConstructionReplaceable JawsFused Steel HandleSwival BaseAnvil Incorporated