Paint markers are designed for marking on slippery & smooth surfaces such as ceramic tiles, glass and plastic, or on wet surfaces. They are ideal for both porous and non-porous surfaces. Raptor Supplies offers a wide range of paint, grout, industrial & jumbo grout markers and paint marker replacement tips & nibs from brands like C.H. Hanson, Super MET-AL, Markal and Grout-Aide. Alcohol, oil and water based industrial markers feature a squeeze action to control the flow of paint. Super MET-AL paint markers have a quick-drying formula and provide long-lasting marking on the surface. They are available in tip sizes ranging from fine to thick.