This classic wrapped industrial grade belt meets or exceeds all USA RMA published ratings levels. This belt is designed to perform at the identical or higher level than all other major manufacturers' belts of the same type input size and torque specifications. The fabric wrap enhances abrasion resistance and ensures smooth engagement with pulleys. Our belts are crafted with fiber rich compounding for exceptional consistency. The classical profile is ideal for both light and heavy-duty applications, providing versatility and dependable performance. Anti-static, oil and heat resistant. These belts are versatile and reliable, making them ideal for a wide range of applications, including industrial machinery such as pumps, compressors, and conveyors; agricultural equipment like tractors and combine harvesters; automotive uses in engines, alternators, and power steering systems; and HVAC systems where they efficiently drive fans and blowers. Their adaptability also extends to general-purpose applications requiring dependable power transmission. To measure your old V-belt, first identify the style: for 3L belts, measure the top width, which should be around 3/8 inch, and then measure the outer circumference for the length. For A groove / 4L belts, the top width should be about 1/2 inch, and for B groove / 5L belts, it should be around 5/8 inch. Use a ruler to measure the width of the belt at the outer / wider edge. Use a flexible tape measure to determine the outer circumference by measuring around the belt in a circle if the belt is still whole. Or measure the belt end to end if the belt is cut in half. Angle= 40° Operating Temperature Range= -18°C to +80°C Maximum Recommended Belt Speed= 30 m/s 6 month no hassle warranty Sellerocity Bulk 4-Pack of Classical Wrapped RMA Grade A Section V-Belts, A50 / 4L520 Belts, 1/2" Width, 5/16" Height, 52" Circumference