THIS IS FOR TWO PULLEYS shown in photos.

This pulley fits the small block Chevy short water pumps
Features a cast aluminum construction and natural finish
Has a 5/8" centering hole and dual bolt pattern
Pulley measures 6.65" OD and provides a 20% reduction
Superior belt retention with extra-deep grooves
Machined from lightweight cast aluminum
Superior belt retention with extra-deep grooves
20% reduction slows accessories down for less drag
Adds top-end horsepower
Reduces water pump impeller speed below cavitation threshold
Improved high-RPM cooling capabilities
5-7/16" diameter