The Gransfors Bruks Splitting Axe is designed for splitting chunks of wood, "rounds". The thick part of the concave wedge shaped axe head powers apart the grain of the wood.
The Large Splitting Axe has a 3" face and a 3½ lb. head, not designed to pound on a wedge. 27" hickory handle.
The Small Splitting Axe has a 2½" face and a 2 lb. head, not designed to pound on a wedge. 23" hickory handle.