Damaged Screw Extractor Set: Tackle broken, stripped and damaged screws and bolts with this screw extractor set. These extractors will help you remove even the toughest broken fasteners with great efficiency. The Right Size: Always have the right extraction bit when it's time to deal with broken or frozen screws. This set features extractors from 0.3 cm to 2.2 cm, and each piece has a marking for easy identification. Durable bolt extractor set: made of high hardness steel with forging high temperature resistant, wear-resistant, sturdy, durable and not easy to deform. Versatile: This screw and bolt extractor comes in a durable and practical box for easy storage and transportation . Widely used in auto repair, garage, construction site, home renovation, etc. Easy-to-remove bolt extractor set: Aggressive multi-plane teeth feature a design in left-hand spiral to provide extra gripping power and faster threading. Spiral flutes integrate to increase grip and reduce resistance. Product Description Made of alloy steel for hardness and durability.< /p> Works on wood and machine screws, as well as flat, hex or painted screws. Includes different sizes of screw extractor to meet different needs. All tools are packed with storage, so convenient to carry and store. A fine-tooth thread for broken water pipes and pipe breakage, remove the thread sliding screw. Material: alloy steel. Contents: 5pcs (1/8"-1/4") *1: 1/14", 7/32", 3/16", 5/32", 1/8" 5pcs (9/32"-13/32") *1: 13/32" , 3/8", 11/32", 5/16", 9/32" 5 pieces (7/16"-9/16") *1:9/7cm, 13/32", 1/2", 15.4", 7/16". 5pcs (19/32"-23/32") *1: 23/32", 11/16 ", 21/32", 5/8", 19/32" 5pcs (3/4"-7/8") *1: 7/8", 27/32", 13/ 16", 25/32", 3/4"