These are precision made 10 oz octagon head driving hammers, also known as Farrier hammers using Alloy 4150 metal. This driving hammer, farrier hammer, has a smooth head and is roughly 50 Rockwell hardness. We hold +/- .005" tolerances on these heads and install them on a high quality wood handle, approximately 1-1/8" diameter by 13" overall length. Nicely proportioned hammer, high quality, and moderately priced. Heritage Forge driving hammers are one of our best selling farrier tools!