This damaged screw extractor set and stripped remover are constructed of durable high-quality steel (HSS 4341), screw extractor kit with excellent hardness of 63-65 HRC for extra durable, and corrosion-resistant, resists the impact of high-speed operation.With forging process to integrated mechanical property and long service .Damaged screw extractor 12pcs set suitable for mechanics, electricians, DIYer, handymen, engineers, carpenters, roofers, technicians, outdoorsy men, etc and easy out all sizes and most screw heads: , slotted, square, star and pozi. There are also rusted, cracked, damaged or peeling damaged bolts such as screws, studs, bolts, fasteners or nuts. The water pipe remover kit can also be completed.Ergonomic design, highly suitable for various machinery repair work.The screw extractor is simple and easy to operate, Step 1: choose a drill bit that is a bit smaller than the damaged screw, then use the drill/polish bit to start a reverse run to pull out and drill down to make a clean hole. Step 2: switch the drill to the pull out bit, and Use a downward pressure (and slow speed) to let the puller head "drill" into the damaged screw, the water pipe extractor is equally simple to use, use the drill to a deep hole in the .A really practical gadget gift for men, damaged screw extractor set can work for both engineering and home.6 pcs screw extractor set and 6 pcs extractor set,The precision stripped screw extractor set with the specifications of 0, 1, 2, 2, 3, 4, The easy out extractor set comprises 6 pieces sizes; for 3/4 inch -1 inch , 9/16 inch -3/4 inch , 7/16 inch -9/16 inch , 5/16 inch -7/16 inch , 1/4 inch -5/16 inch , and 1/8 inch -1/4 inch .Easily and Quickly remove common sizes of damaged, broken or stripped screws.screw remover and extractor efficient and convenient to connect with most electric drill adapters, screwdrivers, manual sockets.Material: Metalcolour: Gold+BlackPackage Contents:6 x Screw Extractor Set6 x Extractor SetOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.