Avery Ultra Duty Marks-A-Lot Permanent Markers - 1 mm Marker Point Size - Bullet Marker Point Style - Black - 12 / Pack

1mm bullet point for consistent line widths Industrial-grade ink make these the best permanent markers for concrete, wood, metal and more Durable permanent marker tips resist clogging and are perfect for wet, oily and abrasive surfaces Black permanent marker ink is also resistant to water, abrasion and smearing Heavy duty industrial marker designed for jobsites and harsh conditions