1.All accessories are made of stainless steel for outdoor installation，Excellent for marine and other outdoor applications 2. Accessories include：Pipe bracket 2pcs ;U-Bolt 2pcs;Nuts 4pcs;Spring washers 4pcs ;Plain washers 4pcs ;All are made of stainless steel. 3.Suitable for automotive, plumbing and reinforcement applications 4.The whole set of accessories can be used for holding poles with diameters ranging from 1.1 to 1.8in (30-46mm)