All of Ironlak's Pump Action Markers are totally refillable, allowing you to replace the paint once it’s depleted. Choose from Ironlak’s Fluid Acrylic colour range, or mix and blend your own custom colour concoctions – the choice is yours. The barrels of our paint markers are moulded from Polypropylene plastic for a high strength, durable product that won’t shatter or warp under stress, and has the added benefit of solvent resistibility when compared to similar plastics. Their nibs are made from dense nylon fibres that retain paint and allow for a continuous flowing line. When they start showing signs of wear and tear, simply swap them out for a fresh set – it’s as simple as that.