A wonderful piece of mid-century American hardware history. This is an original unopened set of four Roll-A-Glide Ball Bearing Casters still mounted on their colorful factory display card. The period graphics are fantastic, from the bold typography and cartoon hammer to the "Hammer like a nail" slogan and original 39¢ retail price sticker. Intended for chairs, tables, desks, and even the new television consoles that were transforming American living rooms, this little package captures the optimism and practical ingenuity of postwar America. An outstanding display piece for collectors of vintage hardware, general store advertising, or mid-century décor.