Stainless Steel Material: Post base protectors are made of stainless steel, sturdy and durable. Its surface is baked with high temperature powder texture, which can be firmly adsorbed on the surface and not easy to fall off the paint. It is waterproof and rustproof, friction resistant, and will not be scratched off like ordinary especially.High adaptability: This column protector can be freely and flexibly assembled, with four L-shaped overlapping designs per set. It can be installed on any column or rectangular column with a diameter ranging from 3.3-6 inches. You don't have to worry about gaps or exceeding the actual size of the assembly on the column. It will tightly fit the wrapped column.Size specifications: (L) 5 "* (H) 3.5" (1 set/4 pieces), can install column diameter: 3.3-6 "(square or rectangular column).Easy to install: This kit includes all accessories, screws, and drill bits for immediate installation. 1. Overlap L-shaped steel parts to wrap around the column, 2. Drill preset holes in the overlapping holes of the workpiece with an electric drill, 3. Drill the hexagonal screw into the wooden column to complete the installation.Widely Used: Wooden posts will cause the bottom to be damaged and break easily in long-term rain erosion, wind and sunshine. This adjustable deck post base can protect the bottom of your fence, swing set, railing, log cabin, chair and other wooden posts, salt city his or her it service life.