The Montana EMPTY Markers come with new straight shapes and special optimized valve systems. The Markers are refillable empty bodies, suitable for all Montana inks and paints refill with a special pump system for optimum flow control. Highest quality manufacturing. Use for the perfect combination Montana INK Refill. Delivered as empty Markers. Montana EMPTY Markers are available as 8mm/ 2mm round, 10mm/ 3mm chisel, 15mm standard and 10mm crusher.