Bun'eido brand ebony handle printmaking knife, triangular blade, 4mm - Type: Triangular knife - Material: Metal - Handle material: Ebony - Blade shape: Triangular - Blade length: Approximately 1.5cm - Total length: Approximately 13cm Thank you for viewing. It's an old item, but there is no rust. The blade tip is slightly worn, so it seems to need sharpening. The marking on the back of the knife says 3mm, but the blade width is 4mm. This is a used item, so please understand that no claims or returns are accepted. If you are purchasing multiple items, please use the combined purchase option.