360J10 4PC Rubber 4 Pack BlackAbout this item BESTORQ V-Ribbed belts are ideal for high speed and/or high drive ratio applications, offering smooth, vibration-free performance in a single, compact drive belt Made of heat and abrasion resistant materials for long belt life. The helically wound tensile cords are specially engineered, twisted, heat and chemically set, polyester material. Testing has proven that the tensile decay properties of BESTORQ Cord are truly World Class Truncated for maximum flexibility, reduced heat buildup and longer belt life. The truncated ribs will not allow the belt to bottom out in the sheave grooves, increasing traction and reducing slip Meet or greatly exceed all requirements of USA belt standard RMA IP-26 for V-Ribbed belts Belt angle is approximately 40 degrees › See more product details