The Hammer Claw is an AMERICAN-made instrument "Assisted Soft Tissue Mobilization" (ASTM) or manipulation use tool to enable the operator to efficiently locate and treat soft tissue dysfunction. The technique itself is said to be a modern evolution from traditional Chinese medicine called “Gua Sha.” Scraping commonly refers to the "TTPs” used to engage the body’s natural healing mechanisms, “A-stimulation” of the body’s natural healing response. Augmented Soft Tissue Mobilization. Acute Stimulation Trauma Yielding Magic (ASTM/ASTYM). Our tool is a mix of scraping and SCRAPPING. Less is more when it comes to pressure applied to fascia. Physical therapists, chiropractors, and doctors use these methods consistently. Maintain your machine by learning the ways and applying them properly. The Hammer Claw is manufactured from G-10, a high-pressure composite material, favored for it's high strength, low moisture absorption, durability, and stealth under metal detection. BE YOUR OWN BODYGUARD.