The 48-22-3105 Milwaukee INKZALL permanent markers are optimized for jobsite conditions. The durable tip is designed to withstand writing on rough surfaces such as OSB, cinder block and concrete and writes through dusty, wet or oily contamination. The hard hat clip is designed to clip onto the brim of hard hats for easy access.

• Wear resistant tip: acrylic nib ideal for rough surfaces such as OSB, cinder block and concrete
• Quick dry time: reduced smearing markings on PVC, HVAC pipe and steel studs
• 72 Hour cap off life - leave the cap open for up to 72 hours without drying out
• Hard hat clip: attaches for easy access
• Anti-roll design: marker won’t roll away without cap
• Writes through dusty, wet and oily surfaces
• ASTM D 4236 certified: non-toxic ink
• Durable marker tip for writing on concrete, OSB and rough surfaces
• Built-In hard hat storage clip