These Simply Acrylic paint markers are highly versatile & suitable for almost every surface. The water-based ink is permanent, streak-free & fast-drying. Can be used on many surfaces including paper, fabric, wood, ceramic, plastic, glass & more. Can be used straight from the tube & can be thinned with water. Pump release: to release the colour, simply shake, press the pen multiple times against the surface & start designing Set of 2 x 5.3ml markers with 2-3mm nibs, in black & white colours.