Vintage Zenith Aluminum Mallet Hammer. It is non-marring, heavy duty, light weight, non-magnetic, and non-rusting. It is generally non-sparking but could potentially spark if it picked up other materials that can produce sparks. Great for applications where you are striking materials you don't want to damage like aluminum parts or materials harder than aluminum. Its overall length is 13-3/4 inches. The head is 3-3/4 inches long and 1-3/4 inches in diameter and is solid to the handle. It was made in the USA.