Heavy duty steel plated and aluminum. Swivels 360 degrees. adjust for tilt. Fits cables 1/4"-3/8" and any kind of sign. kit includes: 3 5/16"x 5/18' hex head bolts, 5/16" nuts and 5/16" lock washers, 2 3/8" x 1" carriage bolts, 3/8" nuts and 3/8" u-bolts, 6 standard 3/8" lock washers, 1 standard 1/2" x 3" carriage bolt, nut, lock washer spacer.