Power Steering Pump Pulley: Color: Silver 5/8" Shaft Hole w/ Keyway - (Will NOT Work on Press-on Pulleys) 5-3/4" Diameter Single Groove Custom Design Billet Aluminum CNC Machined Clear Anodized Finish Water Pump Pulley Color: Silver Pulley Diameter is 6 9/16" Pulley is 2 1/4" Tall Bolt Pattern is 2 1/8" Center hole is 5/8" Single Groove Machined From Billet Aluminium These Feature deep grooves to prevent belt from slipping Water Pump Crankshaft Pulley .