Designed to propel Japanese chisels, these make excellent general-purpose hammers for driving nails or "adjusting" setups. The black fiberglass handle shaft, wrapped in a hard black rubber hand grip, provides comfort and durability. Handles are a bit long for the head weight, so you can choke up for control or swing from the butt end for power. One face of the steel head is flat, the other domed. 375g model weighs 13 oz. with a 13-1/2" handle and a 3-5/8" head. A remarkable value for the price.