The USG SHEETROCK™ Drywall Corner Bead Hopper has been specially designed for tough jobsite conditions, and tough professionals like you. One tool for Inside and Outside Drywall Corner Bead! One-piece gate construction makes adjustments a snap, and the reversible tray allows for inside or outside use without carrying extra parts. Extra gate storage is built-in, so you won't have to worry about losing the extra bits and pieces.