Stainless steel trimming tools comes in11 different shapes and were hand made by master potter Hsin-Chuen Lin.
The stainless steel trimming tools stay sharply longer, rust free and easier to rinse clean.
Resharpening instruction: If you don't have a power grinder, you can use a fine diamond file or a sand paper filing/sanding the inner part of the tools, and you should be able to keep the tools sharp again.