Browning® V-Belt, Series: Classical Series, B Section Size, 53 in Outside Length, 21/32 in Top Width, 7/16 in Thickness, 51.8 in Pitch Length, 1 Ribs, Wrapped Construction, Polyester Reinforced Material, Resists: Oil, Chemical, Heat, Neoprene, -32 to 140 deg F, Import, For Use With: General Purpose Heavy-Duty Industrial Drives, Additional Information: 0.95% Efficiency