transmission belts rubber timing belt,Poly V Belt Detailed Product Description Poly-v Belt Features: 1) Materials: rubber, reinforced fiber, cloth 2) Ribbed belt type: PH, PJ, PK, PL 3) Transmission function of both flat and V type belt 4) This flat and soft belt is suitable for transmission of small pulleys and for high-speed transmission with a speed of 40m/s 5) Heat, grease and oil resistant, and long usage life