This is a 3-piece Wood Chisels set of our most utilized sizes. The handle can be struck with a sledgehammer. Unbelievable sharpness made possible by traditional Japanese techniques. It is called "Oire Nomi" in Japan. You can use it for manufacturing processes such as creating shallow tenon and mortise holes, polishing roughly drilled holes, adding cylinders onto holes, etc. You can use it in a wide variety of woodwork such as architecture, fittings, furniture, and smaller projects.