The Grainger 14G299 is a 14 oz. dead blow plastic hammer with a 2-1/2 inch diameter striking face. It has a hollow head filled with steel and lead shot to prevent rebound and absorb shock. The hammer has a fiberglass handle that provides durability. This general purpose hammer allows the user to deliver heavy blows without marring the surface. It is well-suited for automotive, construction, industrial and home use. The total length is 12-1/2 inches.