Feature: Repairing screw thread ranges from 0.2-0.63 inch. Provides new enlarged thread and replacement drain plug screws for use when existing threads are damaged or worn. Remove broken fasteners without rupture and jam. Extract broken fasteners in maximum twist without expanding. Drill is made of #4241 steel, surface polishing process. Extractor pin is made of 6150 Chromium Vanadium steel, surface polishing process. Drill sleeve is made of #45 steel, black oxidation process. Extractor nut is made of alloy steel, sand blast process. Made of high quality steel, hardened and tempered for maximum durability. Moulded plastic box, easy to transport and store. Professional tool, your best choice when you renewed the damaged screw thread. Specification: Condition: 100% Brand New Material: Steel Item Color: Silver & Black Box Color: Red Drill Size: 1/8", 3/16", 1/4", 5/16", 11/32" Package Weight: Approx 811g Package Include: 5 * Drill 5 * Extractor Pin 5 * Extractor Nut 10 * Drill Sleeve Note: 1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.