Double Ended Screw Extractor Damaged Screw Extractor Drill Bit Extractor Drill Set Broken Speed Out Bolt Extractor Bolt Stud Specification: Color: Golden or Silver Material: tungsten carbide tip Package: 6 pieces/lot Length: 51 mm/ 2.01 inch Product description: 1. [APPLICABILITY] Remove the broken or damaged screws. 2. [EASY TO USE] Just 3 easy steps. Removes every stripped screw in 10 seconds or less! 3. [MATERIAL]: NINDEJIN double tip damaged screw remover is made of high speed steel 4341; hex shank(single tip) 1/4" is made of high speed steel 4241. 4. [DIFFERENT SIZE AND TYPE] This screw remover set itself comes with four/five different sizes bits. Two sides can be used. So it can be used on any screw types / size. The hex shank 1/4" Threaded head design for better grip and better use; Instructions for use: 1.Select screw remover that is smaller than the damage screw. Use a drill to turn a hole deep enough in the middle of the screw head. Note:the deeper the hole, the easier it is to remove the screw. 2.Take out the screw remover then reverse the screw extractor 3.Hand drill is turned counter clockwise slowly to drill,but do not use high-speed drilling Package includes: 4/5/6 * screw extractor 1 * plastic case Remover 0 # diameter 2-3mm Remover 1 # diameter 3 - 5mm Remover 2 # diameter 4 - 8mm Remover 3 # diameter 5 - 10mm Remover 4 # diameter 6 - 12mm