Gates 6819 PoweRated V-Belt, 4L Section, 1/2" Width, 5/16" Height, 19.0" Belt Outside Circumference Bareback construction for smooth clutching o shock loaded, backside-idler drive equipment Aramid Tensile Cords combine limited stretch with extraordinary strength and durability Meets RMA oil and heat resistant standards PoweRated belts are suitable for outdoor power equipment, appliances and industrial applications where FHP belts are typically used