For flexible, finer line marking, the DURA-INK 55 features a medium chisel tip to produce both fine and broad permanent marks. This economical, durable plastic barrel withstands tough industrial uses and is the alternative to the high-cost metal barrels. FEATURES & BENEFITS: Multi-use chisel tip creates both fine and broad marks. Durable tip and barrel for use in industrial environments. Clip-cap for convenient pocket storage and prevents rolling on the jobsite. Fast-drying, wear- and water-resistant formula offers long-lasting, visible marks. For low corrosion (low chlorides/halogens) applications, see DURA-INK 55- Low Corrosion Color. Mark size: 1/16" or 3/16" (1.5 mm or 4.5 mm). INDUSTRY USES: Industrial manufacturing. Shipping supply. Construction. Metal fabrication. Automotive and other transportation. Plumbing industry. Heating, ventilating, and air conditioning industry. Aviation and aerospace. SURFACE USES: Metal. Cardboard. Pipes and tubes. Plastic. Glass. Lumber and ti