Extra Heavy Duty 5PCS Screw Extractor Set

- set includes different sizes of screw extractor to meet different needs - 3-6mm (1/8"-1/4"), 6-8mm (1/4"-5/16"), 8-11mm (5/16"-7/16"), 11-14mm (7/16"-9/16"), 14-18mm (9/16"-3/4"), 18mm-25mm (3/4"-1") - made from high carbon steel for extra hardness and durability - easy to use - use a drill to drill a deep hole in the screw head, turn the screw extractor counterclockwise on the damaged screw to lodge the screw extractor on the damaged screw/bolt, and finally take out the damaged screw. - aggressive left hand spiral tip design easily and firmly embeds the extractor into the damaged screws for efficient removal - square head end design allows the extractor to work with wrenches, pliers, tap handles etc - universal application on all types of bolts, screws, bolts and pipes that cannot be removed by ordinary screwdrivers