The WHLAXLE5CT axle is a FLANGE style axle made of 4130 steel. This axle has a 0.75 inch diameter bearing surface. The axle has the Flight Design CT bolt pattern. This axle assembly comes with the 0.75 slotted hexnut, cotterpin, and washer.
Matco Aircraft Landing Systems axles that are aluminum are black anodized and steel axles are yellow zinc.