The drill press roller support makes it safer and easier to work with large, heavy work pieces. Easily attaches to any drill press with a 2-1/2 to 4 diameter column. Featuring two adjustable supports that extend to 28 on both sides of your machines centerline providing a stable 56 wide work surface. 9" of vertical adjustment for accurate leveling. Each 10 wide support is a galvanized steel ball bearing roller that makes easy work of moving stock through the operation. All components adjust easily with large plastic knobs. Includes a 3 x 10 accessory tray for holding your drill bits or chuck key.