The Forney 20474 drill bit 1/2" surface treated high speed steel (HSS) fractional screw machine length (stubby) drill bit with 135-degree split point for improved wear resistance. Designed for use in machine drilling and in portable drilling equipment on hard and tough steel metal alloys of the heat resistant stainless and titanium types. The split point, heavy duty construction and stubby length provide for easy penetration making this drill an excellent choice for many different applications, particularly in automotive body work and in the building and appliance industries. 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. If you"ve got metal working questions, we"ve got answers. Were committed to your success regardless of location size or needs. 1/2-inch (12.7mm) drill bit. National Aerospace Standard 907, Type C. 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.