I wouldn't recommend them to others Trying out purposes as shelves etc. Here is what I used for black pipe racks to hold the wood on the pipe seems suitable for this.They are not rigid at all but this price for use for what I did, worked perfectly.
Hankook Tire Ventus Prime3 K125 195/55 R15 89V summer
12 Review
191Pcs Nickel Plated Metal Eye Shape Screws - 9 Sizes, Self Tapping, Silver Color | ECKJ
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Universal JONNESWAY S04H52494S, 94 pcs, green
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SZHKM 150PCS M6 Kit Crib Screws Hardware Replacement Kit Hex Socket Head Cap Screws Nuts Zinc Plated M6 Screws Barrel Screws Furniture Screws And Bolts Assortment Kit For Baby Bed With Free Tools
24 Review