Features For the manual removal of hex head bolts, studs and internal hex head screws in machines and equipment. Screw extractor are ideal for removing damaged or damaged bolts, screws, fittings, etc. With metal case for easy carrying,very portable. Easy to use, it can meet the needs of various sizes of cobalt drill bits. High strength and hardness,resistant to aging. 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 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.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List 5 x Drill Bit 5 x Screw Extractor