The Forney 60426 style oxygen acetylene cutting tip features a copper shell machined from solid bar stock (not tubing). Thick shell flange. Extra heavy duty shell end where the tip takes the most abuse. Larger diameter decreases preheat time, maintains the cut on painted or rusty plates. Course 'V' splines which cuts better, resists clogs and makes cleaning easier. Made in the U.S.A. Forney Industries is one of America's longest operating family-owned metal working product companies. Founded in 1932, Forney offers more than 5,000 products for the hardware, automotive, farm and ranch and do-it-yourself markets. If you've got metal working questions, we've got answers. Were committed to your success regardless of location size or needs. Size #00. code 6290-00. Fuel type: oxy-acetylene. Cutting depth: 1/4 inch (6.35 mm). Medium duty rating. Fits Forney 1687 torch kit. Claims for warranty must be made within 90 days of the date of purchase. Proof of purchase required. This warranty does not cover any product that has been subject to misuse, neglect, negligence or accident, or that has been used in any way contrary to the purpose intended.