Edelbrock 3.000in. pulley part #15853 allows you to fine tune the airflow and performance of your Edelbrock C7 Corvette or Enforcer Supercharger system to your preference. The Edelbrock #15853 features a 10-rib design for use with our Edelbrock street rod and muscle car Supercharger systems. Edelbrock pulley part #15853 offers a polished finish. - 3.00in. 10-Rib Edelbrock's/C Pulley in Polished Finish for Enforcer Systems