S&F STEAD & FAST vise jaws ARE made with quality thermoplastic polyurethane (TPU), soft enough to protect surfaces from damage yet hard enough to hold items in place. Vice jaw pads can grasp and hold in place wood, plastic, metal, threaded objects, tubing, or anything round, irregular, or flat. Rubber vise jaws have a solid feel with strong rare earth magnets placed perfectly and holding really well. These modular designed magnetic vice pads can be used with any flat, round or irregular shape. Vice soft jaws are essentially two sets of jaws in one: you may use the grooved faces for holding cylindrical and bar-stock items, or you may use the flat faces for holding large or flat items. The flat and grooved sides of these soft vise jaws are interchangeable, allowing you to grip any flat, round or irregular shaped objects safely and securely. Typical applications which benefit from using these padded vice protectors include DIY projects, arts and crafts, jewelry makers, gun smiths, golf clubs, fishing gear, engineering, toolmaking and carpentry