Mechanical Cooling Fan - 18 in Fan - 6 Blade - 5/8 in Pilot - Universal Bolt Pattern - Steel - Black Paint - Each Brand Allstar Performance Hub to front edge away from engine - 5/8. Hub to back edge towards engine - 1-1/2 ALL30100 Truck Freight- NO State Restriction-
Proposition 65: These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm. For more details visit https://www.p65warnings.ca.gov/