The tetsu wakizashi will, like ports weapons and tier 90 weapons, degrade after 10 hours of combat. It can be fixed with at NPCs such as Bob in Lumbridge, or at an armour stand in a Player-owned house. If lost in the Wilderness, it will be converted to 1,250,000 coins. Currently, a full repair costs: * Bob * Armour repair stand (at 99 Smithing with a Smithing cape)