The Forney 20506 left hand drill bit, 29/64" Industrial Pro high speed steel (HSS) fractional left hand twist screw machine length (stubby) drill bit with bright finish and 118-degree split point. Ideal for drilling out and removing broken studs, bolts and screws. Using a left hand drill bit for removal eliminates tightening or spinning the work deeper. Many times, the left hand drill bit will spin the broken piece out without having to use a screw extractor. Requires a reversing drill. Forney Industries is one of Americas 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 youve got metal working questions, weve got answers. Were committed to your success regardless of location size or needs. 29/64-inch (11.51mm) drill bit. Claims for **must be made within 90 days of the date of purchase. Proof of purchase required. This **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.