This is a Double top only 30 in. deluxe banner arm mounting set, contains cast aluminum mounting brackets with stainless mounting straps. Crossbars are fabricated from 1-1/2 in. outside diameter clear anodized aluminum pole with caps for a finished look. Brackets are ideal for round poles. For square poles we suggest using a U-bolts to attached brackets to pole, see items 310030 to 310032 for your poles size. Banners should be Finished with a Top Pole Sleeve and a Grommet or D-Ring at the Bottom. Set Includes: 1 - Double Deluxe Bracket 1 - Aluminum Poles 2 - Stainless Steel Mounting Straps 1 - nylon flag tie/Cable Tie Weight: 5. 5 pounds.