Made by Hasegawa san of Fujishika, This handy triangle hoe is called “Katate Sankaku Hoe” in Japanese. "Katate" means one hand. Sankaku means triangle. Japanese people call it hoe hoe for short.
You will see the Katate Sankaku Hoe stands for the Handy Triangle Hoe. Ours are made with high-carbon steel clad with soft iron for added durability and prolonged sharpness when digging out weeds. Cheaper ones are often made with mono steel and the edge gets rounded soon. Because these are carbon steel they will rust if you don't wash them off and dry them before putting them away.