The Forney 86140 Tip Drill Set with Extra Drills includes twelve (12) high carbon steel tip drills stored in a barrel. It includes sizes #52 through #74 within a pencil compatible design. It also includes a pocket clip. They are used to clean and true most standard orifices of acetylene welding and cutting tips. Use Forney 86139 for replacement cleaning drills. 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 & ranch and do-it-yourself markets. For more information, visit www. forneyind.com. If you've got metal working questions, we've got answers. We're committed to your success regardless of location size or needs. Please contact our team at www. firstname.lastname@example.org. 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.