The Vintage 4 Packs Dur-O-Lite Box of Lead Pencil Refill is a rare and collectible item that has a nostalgic charm. Made by the reputable brand Dur-O-Lite in the United States, these drafting pencils are perfect for art, architecture, or engineering enthusiasts looking for a high-quality and vintage writing instrument. The black CX-22 72-3 1/2 lead refill ensures smooth and precise drafting with a classic touch. This product is a must-have for collectors of unique and vintage writing tools. Some of the boxes may be missing a couple of pieces