This rubber bench block is extremely handy for hammering, stamping, disc cutting, and other uses. It is made of firm vulcanized rubber to give you an excellent surface to work on or to put a steel bench block or forming tool on. It enables you to remove dents and straighten metals without scratching, marking, or distorting your metal. Block measures 4 x 4 x 1" (10 x 10 x 2.5 cm).