Material: These U bracket tubes are for steel and actually resistant to corrosion and dust, which is durable and ensure many years of use. Color: Black . Package: 6 pieces of heavy duty pipe clamps, enough for your daily use or replacement. Application: They are perfect for straps fit for Pipe Fitting Tubes. They are ideal for industrial pipe lugs and stands to hold the planks in place, these U brackets can be fixed into any surface and support structure. Build Pipe Fixtures and Furniture: Build a piece of art that fits perfectly To fit your space, build a one of a kind shelf, table, lamp, iron pipe, and pipe fittings, including steampunk lighting, industrial, factory, vintage, retro, reclamation, diy bespoke art. Build something you build would like.