Zig 5mm Painty FX Pen Chisel Tip Marker, Primary This painty fx marker is a xylene free paint marker with a 5mm chisel tip great for writing at steady widths lines Can also be used for sign-boards as the ink is permanent and highly waterproof Use it on a variety of surfaces including plastic, wood, glass, metal and more This package contains four primary markers Imported and conforms to astm d4236 standard