These 150mm Yagimitsu knob cutters are from our premium range of Japanese bonsai tools, for when only the best will do. They are top quality Japanese steel. They give clean and accurate cuts. These are the smallest sized Japanese knob cutter we stock. Great for smaller shohin / mame size trees. If cared for in the correct way these cutters should last a very long time. Keeping tools clean, free from dirt and grime is half the battle!