Square tube
without thread
Press-fit plugs for square tubing unthreaded – closed steel cap for edge lengths from 20 to 60 mm. Fits the tube with a form-fit, smooths out sharp cut edges, and keeps moisture out. For wall thicknesses from 1.5 to 3.0 mm, raw/ungalvanized; also available galvanised for 30 and 40 mm.