Material: The extractor is forged from premium bearing steel, overall heat treatment, rust-proof and sturdy. Function: The extractor can easily and quickly remove broken or rusty water pipes, screws, bolts, etc. Portable: Comes with a molded box to keep these extractors organized, clean, secure and easy to find. Useful Tool: Ideal screw removal tool for home use and professional electrician. Package: The extractor is designed with deep and wide threads and includes 2.7mm, 3mm, 4mm, 5mm, 8mm, 10mm, 11mm, 14mm, 8 sizes. Product Description Material The extractor is forged from premium bearing steel, overall heat treatment, rust-proof and Sturdy. Function The extractor can easily and quickly remove broken or rusty water pipes, screws, bolts, etc. Portable Comes with a molded box to keep these extractors organized, clean, secure, and easy to find. Product Description Specification: Material: Bearing Steel 1#: 2.7mm 2#: 3mm 3#: 4mm 4#: 5mm 5#: 8mm 6#: 10mm 7#: 11mm 8#: 14mm Package List: 8