Our product:Long service life, excessive energy and toughness, able to operating for long periods of timeLow elongation and higher put on resistanceWith a gentle physique and a closer match to the wheel groove, it has a variety of applicationsProduct selection of tremendous uncooked materials, removal of faulty products, oil and heat resistance, anti-static, and high-quality transmission performanceProduct code description:La=outer circumference Lp, Le=nodal length Li=inner circumference