Great Value - 8 Wet Wipe Chalk Pen Chalk Marker - Buy Bulk and Save for your Labels, Tags and More, White Liquid Chalk Marker, 2mm Fine Tip Wet wipe chalk markers can be removed with any water based solution Dust-free liquid chalk, for the look of chalk without the smudges or mess Write on any non-porous surface including chalk labels, mirrors & glass, and metal To use: shake pen upright for 10 seconds, remove cap and press the tip onto paper or label until ink comes down - this may take 30-60 seconds