Tuff-Seal Prime Patented Hidden Interlock, Commercial Quality Vinyl Floor Tile (No Adhesive Necessary), Surface: Smooth, Color: Brick Red Easy, do it yourself installation without adhesive (optional) Water-tight, slip-resistant, patented hidden interlock technology Heavy duty, 1/4 inch thick, 4 lbs per tile supports cars, airplanes, and forklifts Made with environmentally friendly Dow Ecolibrium Bio-Based Plasticizers $6.28 per sqft price includes FREE shipping (each tile is 17.68" x 17.68" or 2.17 square feet)