The industrial pipe wall hook is made using steel pipe and pipe fittings. This extremely durable and long-lasting design is great for retail stores, trade shows, or extra closet or laundry room hanging space at home. All hooks are made from high quality 1/2" steel piping. The length offered is the main pipe length, you will loose approx 3/4" once full assembled. Example 12" option = 11 1/4" usable hook space. Markings on pipe may differ from time to time depending on whats available. If you have questions please let me know. All mounting hardware will be provided with your hook (4 anchors & 4 screws per hook) the total weight each can support will depend upon securement to the wall. The recomendation is to always secure hooks directly to wall studs. Shipping will be via USPS Priority mail 2-3 day delivery. While some projects may take up to a week to finish, typical order fulfillment is 2-3 days + shipping.