The Big stick is a non-motorized device used to stretch and massage muscle. It is basically a semi rigid rod around which independent, smooth, one-inch spindles rotate. The monster stick is being used by athletes to improve performance. This specific stick was designed with the extreme demands of those who participate in power sports and professional athletes. The wide body 18 spindles and special super ridged 3/4 inch carbon fiber core means this unit will stand up to the abuse of even the most rigorous self administered therapy.