STRAIGHTLINE ACTION. Designed primarily for the Woodworking industry, the 2025H mini-straight line sander allows the operator to level stock when using coarser sandpaper grits or sand between topcoat applications using finer sandpaper grits. Its straightline action eliminates sanding "pigtails" created by most random orbit sanders. The convenient 4 1/2" x 9" pad insures a large sanded area.