Top-quality polyamide fabric & special HNBR (hydrogenated nitrile butadiene rubber) synthetic rubber make Transmission Belts by Conti Tech highly durable & resistant to extreme temperatures. The fiber-glass tensile member ensures optimum tensile strength. The tensile members are twisted in opposing directions (anti-clockwise/clockwise), which ensures that the belt can’t twist out of shape. The three basic profiles (trapezoidal, HTD, STD) enable synchronous power transmission. Benefits: * Hard-wearing polyamide fabric, partly covering the belt on the back, too. * finest top quality synthetic rubber, in part fiber-reinforced * Fiber-glass tensile member twisted anti-clockwise/clockwise * Made in USA Article: CONTITECH Standard Transmission Belt