Basic 24-color Set of Finecolour Sketch Marker Alcohol Based Ink, a Fine Point Tip and a Broad Chisel Tip, Cheap But Good Quality 24-piece Art Marker Set Basic 24-Color Set of Finecolour Sketch Marker double tips not replaceable alcohol based ink based on BCDS, not refillable a fine point tip and a broad chisel tip: 2mm and 6mm PP ellipse barrel and double caps