[Material]:The impact socket set is made of chrome molybdenum vanadium steel,which is strong and wear resistant,high hardness,high temperature resistance,can be used for a long time,and is not easily damaged [Special Design]:1/2 inch drive nut sockets can quickly replace damaged or stripped nuts,simple and practical,making maintenance easier [Efficiency]:Nut extractor comes with 8 different sizes of sockets and 1 center punch bar to meet your different needs and improve work efficiency (Metric 14 mm 16 mm 17 mm 19 mm 21 mm 22 mm 24 mm 27 mm,1/2 inch) [Wide Application]:Damaged nut is suitable for all pneumatic and battery powered impact tools,as well as power arms,torques wrenches,etc [Easy to Use]:Nut extractor is easy to use,compact,easy to carry and store,users can use it easily,saving time and effort, Weight: 2.68523035116 pounds, Manufacturer: Zanthicia