The MILWAUKEE 3-piece INKZALL Black Large Chisel Tip Jobsite Markers are optimized for job site conditions. The large chisel tip writes bigger and bolder for clear visibility. The construction marker's durable tip can write on dusty， wet or oily surfaces. It is clog resistant， providing clean， continuous marking. Quick Dry ink reduces smearing after use. The permanent marker can be left without a cap on for up to 72 hours and remain completely functional. INKZALL markers showcase Milwaukee's mission to provide innovative solutions and commitment to best-in-class durability.FeaturesClog Resistant Tip for better marking performanceLarge chisel tipLimited Lifetime WarrantyPermanent， non-toxic ink (ASTM D 4236 certified)Quick Dry Ink dries in seconds to reduce smearingUp to 72 Hour Cap Off LifeWrites on dusty， wet and oily surfacesWarrantypLimited Lifetime Warranty/p