ELATECH® Polyurethane Belts These belts are available in a broad range of popular timing belt pitches and a variety of application-specific backings, including fabric, foam, PVC, rubber and specialty compounds. Variable Speed For use on a wide range of cross sections and lengths. Use on variable-speed sheave drives requiring exact speed control and maximum range of speed changes. Ideal for recreational equipment, agricultural applications and machine tools. Poly-V® Multi-V cross section for small sheave compact designs requiring limited vibration. Ideal for high-speed ratio drives with short center distances.