Axcel engineered a bio-composite hybrid stabilizer using natural flax fibers and ultrahigh modulus carbon material. The use of flax fibers possess a much higher dampening capacity which helps lesson the torque and vibration. The Carbon Flax 500 Pro has a .500 diameter stabilizer rod. Comes with the Kryptos Arc vibration dampener plus 1 each 1” diameter 1oz weight and 1” 2oz weight diameter. Bio-composite hybrid with natural flax fibers Higher dampening capacity .500 diameter rod.