17" Alum. 6 Blade Fanmechanical Cooling Fan, 17 In Fan, 6 Blade, 5/8 In Pilot, Universal Bolt Pattern, Steel Hub / Aluminum Blades, Black Paint, Eachdiameter17 Infan Stylerigidblade Quantity6Pilot Diameter5/8 Inrotationstandardbolt Patternuniversalhub Materialsteelhub Colorblackhub Finishpaintblade Materialaluminumblade Colorblackblade Finishpaintquantityeach