Made from high grade aluminum, precision machined and high speed polished to a show quality shine. Featuring full 360-degree timing marks, screened on with a special process for longevity. Increase horsepower with precision timing and valve settings. Adds that high performance look to any engine. Pulley is 5 hole style and comes with black degree numbers and marks. Seals, collars and spacers are included. Use with P/N 9928 belt.