Poly-F Plus - JK FennerPoly-F Plus belts need less maintenance because of the specially designed polyester cord. These are best suited for remote applications which cannot be Fenner Poly-F Plus V-Belts - Kan Power Rubber IndustriesFenner Poly-F Plus V-Belts, Its have high transmission ratio because of tooth of poly-V belt, So its have high transmission power about 30% – 50% higher up 
Poly F Plus B 1490 / B 57 V-Belt New Product Dimensions, ‎7.09 x 6.3 x 8.27 inches. Item Weight, ‎1.32 pounds. Manufacturer, ‎POLY-F. ASIN, ‎B07X9V9ZFP. Date First Available, ‎September 3, 2019 Fenner Poly- F Plus PB Wedge Belts SPZ - OctaforceFenner Poly- F Plus PB Wedge Belts SPZ. Manufactures and traders of Poly-F Plus Wedge Belts SPZ. Specially designed Polyester-cotton blended fabric jacket Fenner Poly-F Plus PB - Madan Sales CorporationClassical Belts - A Section. Fenner Poly-F Plus PB. "For all unlisted sizes please consult Fenner"  Fenner Poly-F Plus PB. Classical Belts - B Section.