General description Heavy Duty Screw Extractor for Damaged Screws: Tackle frozen, broken, stripped, and damaged screws and bolts with this screw extractor set. These extractors will help you remove even the toughest broken fasteners with high efficiency. The 10-piece extractor set comes in a sturdy and convenient box for easy storage and portability. Widely used in auto repair, garage, construction site, home improvement, etc. Technical specifications Material: High-strength steel Sizes: Extractors ranging from 1/8" to 7/8" Features: Aggressive multi-level teeth with a left-hand spiral design Usage Designed to remove broken or frozen screws Ideal for various applications including auto repair and home improvement