Irwin #4 Spiral Flute Screw Extractor is designed for efficiently removing broken screws, pipes, bolts, and studs. Crafted from strong tool steel, this extractor is heat-treated and features a rust-resistant chrome finish to ensure durability and long-lasting performance. The drill size is permanently marked on the shank of the extractor for easy identification. This model is sized with a bit size of #4, a shank size of 1/4", and is suitable for screws ranging from 9/32" to 3/8" as well as 1/8" NPT. It comes packaged individually on a card for convenient storage and use. Model Number: 53404