Fangrui Product Details High Quality: The Damaged Screw Extractor Kit Is Made Of High Quality High Speed Steel (hss 4341), With A Hardness Up To 63hrc, Durability Superior To Other Materials, High Hardness And Sharpness, So It Has A Good Service Life. Extensive Applications: This Screw Extractor Includes 6 Specifications (# 0, # 1, # 2, # 2, # 3, # 4), Which Can Easily Remove All Common Sizes Of Fallen, Broken Or Damaged Screws. Any Drill Bit And All Sizes Of Screws Or Bolts Can Be Used. Easy To Use: The Threaded Screw Extractor Kit Can Help You Easily Remove Damaged Screws. First, Observe The Size Of The Damaged Screw, Select A Screw Extractor With The Correct Size, And Slowly Drill The Hole Counterclockwise With A Drill Bit. Second: Use A Drill To Pull Out The Insertion Hole At The End, And Then Screw Out The Damaged Screw After It Is Stuck. Powerful Tools: Powerful Tools You Must Have. Put This Set Of Tools In The Toolbox. When You Have This Screw Remover, It Can Help You Remove The Screws Damaged For Any Reason, So That The