Gates 2290 Truflex V-Belt, 4L Section, 1/2" Width, 5/16" Height, 29.0" Belt Outside Circumference Gates curves provide proper cord support and full contact with the sheave-groove for uniform loading, uniform wear, and increased belt life Flex-bonded cords are strongly bonded to the body of the belt resulting in equal load distribution and the absorption of bending stress without cord deterioration The Flex-Weave cover is a patented construction for longer cover life, providing extended protection to the core of the belt from oil, dirt, and heat Meets RMA oil and heat resistant standards Meets RMA static conductivity requirements