Big Horn 19504 Preppin Weapon. Known as the "preppin’ Weapon" for years in the automotive industry this versatile sanding tool is now being made available to woodworkers. Made from high-impact ABS plastic and sized to fit a 1/4 sheet of plain-backed 9" x 11" sandpaper, its design can cut sandpaper waste by up to 36%. Spring Clip design holds single or multiple sheets of sandpaper equally tight. Save time by stacking up to 4 sheets & tearing them away one by one.