Our product:Long service life, high power and toughness, capable of operating for long intervals of timeLow elongation and higher put on resistanceWith a smooth physique and a better match to the wheel groove, it has a variety of applicationsProduct collection of wonderful uncooked materials, removal of faulty products, oil and warmth resistance, anti-static, and high quality transmission performanceProduct code description:La=outer circumference Lp, Le=nodal size Li=inner circumference