Bando 780L24 78 inch long 4.44 inch wide 0.29 inch high Serpentine Belt with 24 ribs Bandos Rib Ace is an ultra thin, extremely flexible belt with the versatility to handle heave, high speed industrial applications like machine tools, as well as light duty, slower applications such as exercise equipment.. Able to utilize very small sheaves, allowing for speed ratios up to 4 to 1. Smooth, vibration-free performance ideally suited for consumer goods applications like clothes dryers. Rib Ace belts can be used in serpentine drive configurations with small backside idlers, making for a compact design. Rib Ace belts improve performance on 1/8 turn, 1/4 turn and mule drives.