Shake your box all you like, these no-slip rails won’t move an inch! Perfect fit for all drawers, even the most shallow. All your spanners/wrenches can face forward in a uniform row for easy identification of sizes and any missing tools. Comes with two forward and two reverse configuration rails to maximize space usage of your drawers. Fits a wide variety of spanner/wrench sizes. Holds 30 tools. Made in USA.