C/o steel tubing aisi 1020, 3.810in. L, 1.250 in. Diameter w/medium knurl surface finish + steel aisi 1018 band 0.500 in. W on inside one end, and steel aisi 1018 disk 1.940 in. Dia, 0.180 in. Thk w/0.500-13 tap through center hole welded to other end