8 Thick Chalk Pens for Windows, Glass, Blackboard, Chalkboard – 15mm Jumbo

More Ink and Value – 8 times more ink (28 gram ink per pen) and 8 marker per set. You actually get the equivalent of 30 markers at price of Eight. Other markers have 4 gram ink
3 In One Nib – The Rectangular Tip enables you to use the Markers as 3 Tips Wide Lines, bold lines & thin fine lines for detail work and bold flat face for large block lettering on car windows, bistro boards.
For Non-Porous Surfaces only – Porous Surfaces will absorb ink and leave ghosting. Always test a