Diagraph GPX Classic Paint Markers
Diagraph GPX Classic Paint Marker, Black
Xylene-free valve action markers allow control of paint flow while keeping the paint in the barrel from drying out when the cap is off. Clearly marks on dark or light surfaces. Great for metal, wood, corrugated, rubber, plastic, glass and other hard-to-mark surfaces. Safe for most porous and non-porous surfaces.
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I have been using these for years and never has one leak on me. The color lasts for a good 5 years or more in an outdoor environment.
These paint markers are great quality. I hear from the field guys they do not leak compared to other brands.
Used these at work on metals of all kinds, wood, rubber and plastic. They marked exceedingly well, lasted on the items, were very easy to see and the ink in the pens also lasted for very many uses.