... gearshift wide V belt(variable speed belt), raw-edged general V belt, raw-edged narrow V belt, raw-edged antomotive V belt, raw-edged ... metallurgy, textile, automotive etc. "AST" brand raw-edged V belt series'bottom were designed as rational structured cog. Therefore uses ... pulley with smaller diametre to improve V belt's property--anti-heat & antiwearing out. Besides, its property ...