It is a Mechanic’s Vices useful for all general purpose, medium and heavy-duty applications. Manufactured from high quality grey iron castings - a very strong material with excellent shock absorbing capacity and immense strength under compression- these rigid and robust vices are designed for smooth operation and reliability.The front jaw beam with machined construction fully encloses the vice spindle protecting the threads from contaminants and damage. The unbreakable SG Iron nut securely locked in the body ensures maximum thread surface contact and constant alignment between body and the sliding jaw. Jaws are hardened 45± 5 HRC for increased resistance to wear. Knurling on jaws ensures a firm grip of the work piece. Perfect alignment of main screw and nut reduces wear and gives long trouble free service. Vices have an attractive powder coated finish with main screw and handle chrome plated. The anvil has a ground finish.