This Pentel paint marker is packed with china clay ink that is superbly effective on non-absorbent surfaces such as metal, glass, rubber and plastic. Because the ink is pigment-based, it produces a thick and opaque line that lasts longer, even in sunlight. The chisel tip writes a 2.75 - 3.25mm line width, is made from strong bonded fibre and features a valve to prevent excessive ink flow. This pack contains 12 markers with white ink.