Description: Material: This Screw Extractor Set is crafted from CR MO alloy, ensuring exceptional durability and high hardness. It is designed to withstand tough conditions without easily breaking or wearing outInnovative Deep Spiral Groove Design: Featuring a deep spiral twisted pattern, this Damaged Screw Extractor Set effectively grips and removes rusted, stripped, damaged, or broken screw and nuts with easeCoarse Thread for Easy Extraction: The coarse threading design of the Easy Out Bolt Extractor Set allows for quick and efficient removal of stubborn fasteners such as stripped screw, broken bolts, and rusted nutsVersatile Application: The Easy Out Bolt Extractor Kit is perfectly suited for extracting damaged screw with stripped heads or threads, broken bolts with snapped heads, and heavily rusted fasteners in various repair scenariosComprehensive 40 Piece Set: Comes in a compact case measuring 8.86inchx5.39inchx1.97inch that includes a complete range of Extractors to tackle any challenging removal task you encounter Specification: Box Size:22.5cmx13.7cmx5cm/8.86inchx5.39inchx1.97inch Package Includes: 1Screw Extractor Set(40 Piece)