5/8" (B style). 

Air compressor V Belts are used to transfer power from the motor to the compressor pump, allowing the compressor to generate compressed air for various applications. They are designed with a V-shaped profile that allows them to fit snugly into the pulley grooves, providing a high level of traction and preventing slippage. Proper maintenance and replacement of air compressor V Belts are crucial for ensuring efficient and reliable operation of the air compressor. They should be checked regularly for wear, tension, and alignment to prevent downtime and extend their lifespan.

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