1312101600 is a 10hp Baldor motor that is most commonly used with the Chicago Pneumatic RCPC series of 10HP reciprocating air compressor, as well as several BelAir and NAPA compressors. This is an OEM motor. This motor does not come with a pulley. You will need to remove the pulley from your old motor and install on this motor.
This motor was used on the following Chicago Pneumatic compressors
This motor was used on the following Belair compressors
This motor was used on the following NAPA compressors