Martindale Precision blades have precision tolerances. Standard H.S.S. blades are generally supplied without hubs and with keyways. Standard Carbide blades are supplied without hubs or keyways.
Gaylee Premium blades have tighter premium tolerances. Standard Carbide blades include hubs and keyways on O.D.’s 2” and greater. Standard Carbide Tipped blades include both hubs and keyways.