Adjustable height: This shelf has five tiers, and sold in 3 pieces together. The height of each tier can be adjusted to meet your different needs. The shelves can become a small space for small items, or you can remove the divider to form a large spaces. Anti-rust & anti-scratch: The surface is covered by powder coating with the smooth edge, which makes the shelf rustproof and smooth enough to prevent scratches. The plastic foot pads come with for added stability on the bottom of the shelf to prevent the floor from being scratched and damaged. Boltless design for the easy assemble: The storage rack is easily built, and all of the necessary mountings and instruction are accompanied. A rubber mallet recommended for assembly (rubber mallet not included; include a pair of glove).