Our product:Long service life, excessive strength and toughness, able to working for lengthy intervals of timeLow elongation and higher put on resistanceWith a soft physique and a better match to the wheel groove, it has a variety of applicationsProduct number of positive uncooked materials, removing of faulty products, oil and heat resistance, anti-static, and high-quality transmission performanceProduct code description:La=outer circumference Lp, Le=nodal size Li=inner circumference