General description The 11pcs Broken Screw Extractor Set is designed for efficiently removing damaged screws, bolts, and fasteners. Made from high-quality chrome vanadium steel, this set offers exceptional hardness, rust resistance, and durability, making it ideal for various applications including wood, metal, plastic, bricks, and walls. Technical specifications Material: Chrome vanadium steel Drill diameter: 3-10mm Usage Designed for removing damaged, rusted, or worn screws, bolts, studs, fasteners, brackets, metal taps, and water pipes. Can also be used to drill holes in various materials including wood, metal, plastic, bricks, and walls. Features an aggressive design with spiral grooves for enhanced grip in both left-hand (puller) and right-hand (drill) applications. Other information The drill diameter and recommended breaking screw diameter are engraved on the case. Note that the screw thread direction is positive while the separator thread direction is reversed. Rotating the