Features Easy to use, it can meet the needs of various sizes of cobalt drill bits. High strength and hardness,resistant to aging. With metal case for easy carrying,very portable. Screw extractor are ideal for removing damaged or damaged bolts, screws, fittings, etc. For the manual removal of hex head bolts, studs and internal hex head screws in machines and equipment. Feature: 1. Easy to use, it can meet the needs of various sizes of cobalt drill bits. 2. High strength and hardness,resistant to aging. 3. With metal case for easy carrying,very portable. 4. Screw extractor are ideal for removing damaged or damaged bolts, screws, fittings, etc. 5. For the manual removal of hex head bolts, studs and internal hex head screws in machines and equipment. Specification: Item Type:Screw Extractor Drill Bit Size:5/64in 7/64in 5/32in 1/4in 19/64in Screw Extractor:＃1 ＃2 ＃3 ＃4 ＃5 .w-e-text table td,.w-e-text table th,;.w-e-text table, Package List: 5 x Drill Bit 5 x Screw Extractor Note: When using, choose a drill with appropriate specifications, drill a small hole in the center of the bolt cross section, then insert the puller into the small hole, and then use the tap wrench or adjustable wrench on the square end of the puller, and Rotate counterclockwise to remove the bolts that are damaged in the machine and equipment. Package List 5 x Drill Bit 5 x Screw Extractor