Built for jobsites, Avery UltraDuty XL wide 18mm chisel tip markers are perfect for bins, metal, wood, concrete, corrugate and moreDurable polyester tips can write on abrasive, wet, dusty and oily surfaces without getting cloggedDesigned to be resistant to water, abrasion and smearing, the industrial ink won't dry out when the cap is left off for up to 72 hoursEach cap has a useful anti-roll bump that prevents rollingIncludes 1 black industrial permanent markerFind the right marker for the job by pairing with other Avery Industrial marking tools