The Ultimate Extreme Martial Arts Weapon! 10th Degree Weaponry's Iridescent Kama, available in a wide range of awesome colour variations. Up-to-date, balanced bos covered with color changing foils. These are 10th Degree’s top competition bos, designed to enhance your performance. As used by many top competitors around the world. Imported from the US - 'Quality Handmade Weapons for the Serious Martial Artist'. Light Weight Available in 12 inch and 14 inch.