Six Sizes Cover Every Job From delicate #0 laptop screws to stubborn #4 lag bolts, one kit tackles them all without buying extra bits. Hardened to 63 HRC Manufactured from HSS 4341—30 % harder than carbon steel—so edges stay sharp after dozens of extractions. Two-Ended Convenience Burnish first, flip the bit and extract—no chuck changes or extra accessories needed. Works in Reverse Rotation Reverse-thread flutes grip tighter as torque increases—so the tougher the screw, the stronger the bite. Pocket-Sized Aluminum Case Slip it into any toolbox or bag; laser-etched size marks and foam compartments keep bits organized. FAQ Q1 What screw sizes does each extractor cover? A #0 (⌀2-3 mm) · #1 (⌀3-5 mm) · #2 (⌀4-8 mm) · #3 (⌀5-10 mm) · #4 (⌀8-12 mm). Q2 Can I use an impact driver? A Use a variable-speed drill on REVERSE at low RPM; impact drivers may snap small extractors. Q3 Will it remove hardened steel bolts? A Yes, provided a pilot divot can be burnished; apply penetrating oil for seized fasteners. Q4 Does it work on left-hand screws? A Yes—the extractor engages counter-clockwise, ideal for both right- and left-hand threads.