Ribbed / Poly V-Belts Can Be Described As Flat Cord-Reinforced Transmissions Belts With Length Wise Running Triangular-Shaped Ribs With A Top Angle Of 40Ï¿¿. This Construction Leads To Good Support For All Cords In The Reinforcement And Therefore An Even Load Distribution Is Achieved. Dim A (1): 8 Rib 67.5" Poly-V; Case-Ih Cotton Picker 2555 (Dsl)