Axe profiles from gransfors maul and ochsenkopf spalt fix. Gransfors has a bit more bite and ochsenkopf wedges a bit better. In different wood they will work better : r/Axecraft
Ochsenkopf Spalt-Fix axe (32270208) - Spare parts for agricultural machinery and tractors.
Ochsenkopf Spalt-Fix ab 70,21 € (März 2022 Preise) | Preisvergleich bei idealo.de