Milwaukee INKZALL Liquid Paint Markers were designed from the ground up to provide users with the best performance on tough jobsite surfaces. All INKZALL Liquid Paint Markers feature a durable acrylic nib that can write on the dirtiest, hottest and roughest of surfaces. Proprietary paint developed specifically for INKZALL Liquid Paint Markers can mark on surfaces up to 300°F and dries in 10 seconds. For the most demanding environmental conditions, INKZALL Liquid Paint Markers provide the longest lasting marks that are both water and UV resistant.