Milwaukee Inkzall fine point markers are designed for trade professionals and are suitable for a wide variety of jobsite applications. They can be used on materials including concrete, wood, metal, plastic, OSB and plywood, and will work on wet, oily, dusty or corroded surfaces. The strengthened acrylic nib is designed to withstand use on rough materials like concrete and will maintain its sharp tip without mushrooming or deforming. Features and BenefitsStays sharp, doesn't mushroom or push back under pressureAcrylic nib ideal for rough surfaces such as OSB and concreteMarker continues to write after 72+ hours of cap off timeCan be used on concrete, wood, metal, plywood, OSB and plasticWorks on dusty, wet, oily, and rusted surfacesQuick drying time for reduced smudging on PVC or metalThin body for use in restricted areasClip for attaching to a hard hat, workwear or tool beltEasy open cap for one handed operationLanyard hole SpecificationsColour: Black