The Sharpie Magnum Go to product viewer dialog for this item.

features a 3/4-inch (approx. 14.8 mm) oversized felt chisel tip. This allows for varied stroke widths, from bold blocks to even wider marks when used on its side, making it ideal for posters or industrial pallets.

: The ink is specially formulated to write on difficult surfaces, including wet, oily, or greasy materials like wood, stone, metal, and leather.

While both are considered "jumbo," they serve different needs: Sharpie Magnum vs Sharpie King Size - How Big Is Each?

: It is housed in a rugged aluminum barrel that resists rolling and is built to withstand heavy use in construction or warehousing.