Big Horn 19505 Preppin Weapon Kit. 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.