U.S. Patent Application Publication No. 2001/0009632 A1, published on Jul. 26, 2001, and U.S. Pat. No. 6,331,091 B2, issued on Dec. 18, 2001 for Gary A. Cross, describe an axle made-up of a left and right axle halves which axially engage to form a completed axle assembly for supporting a roller skate wheel or other rotating member.