●Stainless Steel Material: This brake disc is made of high quality stainless steel, which make it anti-corrosion and not easy to deform. ●IMPROVE SAFETY: G3 disc has good rigidity and fast heat dissipation. In the long distance downhill slope, the disc will not turn red and hot, which will greatly improve the safety of downhill ●This brake disc is made of high quality stainless steel, which make it anti-corrosion and not easy to deform ●G3 disc has good rigidity and fast heat dissipation. In the long distance downhill slope, the disc will not turn red and hot, which will greatly improve the safety of downhill ●Ensures wonderful brake performance