Steel Iaito Custom Designed by youYou can choose an Iai yo (with Hi) or a Batto yo (no Hi) The Iai yo is a great training tool, perfectly balanced and perfect for kata. These blades are sharp, will cut, and should be treated with the same cautionary respect we provide our Japanese Shinken. Typically lighter than the Batto yo, Iai yo are capable of cutting as well. When looking at the hi (groove) think "I Beam construction. The Batto yo, a favorite for extensive cutting has a slightly