The National Hardware Garden Bed Kit makes it easy to elevate your garden and add style to your backyard. Materials are made of Steel for durability. All hardware included. Garden Bed Kit includes 8 - 3" x 3-1/4" x 3" Heavy Angles and 16 - 1/2" x 1-1/2" Lag Screws. Thoughtfully designed kits offer flexibility and ease with DIY installation instructions. Digital instructions, helpful tips, images and installation videos to help you design your ultimate space. National Hardware Lifespan Limited Lifetime Warranty