The CSSD/SC Close Range Impact Tool, created by Bram Frank for his Common Sense Self Defense Street Combat system, is not a martial arts style but rather a defense system focused on conceptual patterns and motion principles. The CRMIPT is an expandable tool designed for non-lethal purposes such as trapping, control, takedowns, impact, and restraint. This particular model, the large Magnum CRMIPT Bowie, features a 3.75" blade that is intentionally dull for safety, and a blue G-10 handle.