One4All Acrylic Twin Display Complete Set contains 48 colors + black and white. Pump markers with a tip of 1.5mm at one end and 4mm at the other. The acrylic pens are filled with fast-drying and full-coverage acrylic-based paint that adheres to most substrates and materials. One4All Acrylic Twin works perfectly for sketches, canvas, plastic figures, or furniture. The pens are refillable and have replaceable nibs. See specification to see a list of the colors included.