The Munetoshi Viper with Blue Katatemaki has a very unique geometry and is one of the best handling swords we offer. Featuring an Unokubi-zukuri style geometry, there are two bohi (grooves), and about 1/3 up the blade, the geometry changes into a diamond cross section. The combination of the grooves and diamond cross section gives an exceptionally light sword. Coming in at only 2lbs, this sword was designed to cut light targets with ease and is fully capable for use in tameshigiri. The extremely tough blade will not easily bend or take a set due to the superior heat treatment of the steel. This is a unique katana with rarely seen geometry, extreme light weight, superior heat treatment, and superior handling.