Stainless Steel 【Total 1000 lbs Load Capacity】 Our garage wall shelving is made of high-quality metal, weighing 60.6 lbs. Each shelf has a maximum load capacity of 500 lbs when the weight is evenly distributed, making it convenient for hanging tools. NOTE: Our product must be mounted to a concrete or wood wall, and the product set up for 18” on center studs. Installation Hole Spacing: 18 inches. 【Reinforced Construction】The garage shelving wall mounted is constructed entirely of metal with a sandblasted surface, featuring reinforced front-side beams and two additional steel wires measuring 72.05 x 24.41 x 7.87 inches (W x D x H) to accommodate more items. 【Installation Made Easy】 The garage wall shelves employ a modular assembly design. Simply place the hole positioning paper, install the brackets, tighten the screws, and you're good to go. The lower tool rack can be separated from other organizers according to your specific needs. 【All Hardware Included】 The package includes positioning paper, hooks, cable ties, etc. This garage shelving heavy duty wall mounted is suitable for installation on concrete or wooden walls. If it's a stud wall, please check the hole distance and not suitable for installation on metal walls. 【Neat & Efficient】 Still struggling to find a place for your tools or dealing with clutter everywhere? VEVOR garage hanging shelves are perfect for organizing screwdrivers, handheld power tools, batteries, and chargers. Create a clean and tidy workspace, making you feel more comfortable and productive.