·Premium & Resistant: bolt extractors are made of high-hardness chrome-molybdenum steel with a sandblasted finish for superior durability and longer life. Full sizes include SAE (inches) and metric (mm): 1/4", 5/16"(8 mm), 3/8", 10 mm, 7/16"(11 mm), 12 mm, 1/2", 13 mm, 9/16"(14 mm), 5/8"(16 mm), 17 mm, 11/16", 3/4"(19 mm). Which you can do the work with more flexibility and ease

·Excellent Grip: The special internal thread design of bolt extractor interior is precision engineered, and the reverse helical grooves are designed to snap in for maximum holding force, providing excellent torque, easy to use and remove peeled, rusted or frozen, damaged bolts, nuts and screws in car repair and industrial instrumentation

·Standard 3/8" Drive Head: Each bolt remover with a standard 3/8-inch drive, uses the 1/4"-3/8" hex adapters that can connect with a common impact wrench, tap handle, and ratchet wrench. Easily remove lug nut, oil drain plug, broken and seized bolts. Perfect for every home and mechanic, home repairs, auto repairs, and mechanical repairs

·Clarity of Scale and Portability: All bolt extractors are laser etched, easily identify and select the most suitable size to removal bolt which saves a lot of time, effort or energy while removing rusted bolts out. Heavy duty blow molded case keeps all the bolt remover stay organized, each tool fits snugly into its respective place to prevent moving around and scraping.. The palm-sized box design is easy to carry and store

·Super Cool Tool Gift: Bolt extractor kit complete range of sizes meets most mechanical maintenance, automotive, home decor or craft production repair needs. Is a very good gift for men. It is loved by many tool lovers and is suitable for mysterious gifts on Father's Day, Christmas, Thanksgiving, birthdays and anniversaries. tools have quality assurance, feel free to contact us if there are any problems with the product. We provide you with service in the first time