The new Pentel N50XL Blue is a new addition to the N50 Family permanent marker. This Robust permanent marker will write on almost any surface including wet and oily surfaces. Maximum performance you can rely on every day. Strong aluminium barrel, perfect for long lasting in more harsh working environments! Durable tips, suitable for rough or smooth surfaces. The N50XL has a broad chisel tip and creates variable line widths of up to 17mm