DAYTON 2A563 - HEX HUB,3/8 IN - INTERCHANGEABLE HEX HUB, BORE DIA. (IN.) 3/8 IN, NUMBER OF SET SCREWS 1, CONSTRUCTION MATERIAL ALLOY STEEL, FOR USE WITH REPLACEMENT PROPELLERS FOR AIR CONDITIONING CONDENSING UNITS 4C886 - 4C905, INCLUDES PRETAPPED HOLES...