Create permanent and accurate marks on virtually any surface with uni Paint oil-based paint markers from uni-ball. These markers deliver strong and clearly visible lines. Quick-drying paint is water, fade, heat and abrasion resistant. Valve action control provides excellent flow and coverage, while also preventing the marker from drying out if left uncapped. Permanent paint colors mark opaque and glossy on light or dark surfaces, no matter what it is applied to. The metal barrel and durable tip ensures a long marking life. Ideal for manufacturing, construction sites, automotive, metal fabrication, aviation, marking oily, greasy items and identifying parts or equipment outside.