16 Piece Magnetic Fully modular Wrench holders. Never lose a wrench again! The holders have a built in color strip that allows you to easily identify a missing wrench. Each piece is individually labeled and has a rare earth Neodymium magnet in the base to stick the holder to the bottom of the tool drawer. Each holder slides into place very easily and is removable and swappable. If you acquire more wrenches in the future (which is always the case) you can add to the wrench holder set to fit your collection. If you don't have every wrench listed (what are you doing go buy more tools!) you can easily remove the ones you don't have and save them for later. You can also set these up from smallest to biggest or biggest to smallest. The before and after picture is with the same amount of wrenches in the drawer. Look at all the space saved and more room for tools. Individual holders are about 1in W x 1in L x 1.2 in H. Note that when these are snapped into place they take up less space width wise because they are nested together. The entire set in a row is about 12.5 inches in length.