Patented tip design marks MCM wire up to 3/4" ø quickly, effectively, as well as smaller AWG wire Marks adhere to clean sheath permanently and resist handling, abrasion, and heat 10 times more mileage, 20% lower cost than vinyl tape Color coding and identification of circuits, computer CAT-5 cables, and automotive wires Made in the U.S.A. The Large U-Phase patented tip design marks MCM wire up to 3/4" quickly and effectively, as well as smaller AWG wire (U.S. Patent No. 7,320,553).Marks adhere to clean sheath permanently and resist handling, abrasion, and heat. Get 10 times more mileage, 20% lower cost than vinyl tape. Greenlabel paint also has lower environmental impact than vinyl tape. Use it to color code, identification of circuits, computer CAT-5 cables, automotive wires, coding of telephone wires and coaxial cables, and marking HDMI and audio/video cables.