CRAFTSMAN HAMMER, FIBERGLASS, 16 OZ. (CMHT51398)16 oz. Fiberglass General Purpose Hammer is built for durability against overstriking with an added protective portion where most fiberglass hammers break. This added feature will give the hammer a longer life and added durability for frequent use.*Durability: overstrike protection where fiberglass handles are most prone to break*Improved grip during use: over mold grip*Driving and pulling nails