Anyone can remove stripped or broken screws quick and easily with this 12 piece rigid screw extractor set and case. The kits 6 HSS twist drill bit sizes include: 5/64”, 1/8”, 5/32”, 1/4”, 9/32” and 3/8” along with the following carbon steel screw extractors: #1 (for 1/8” - 1/4”), # 2 (for ¼” ? 5/16”), #3 (for 5/16” ? 7/16”), #4 (for 7/16” ? 9/16”), #5 (for 9/16” ? ¾”) and #6 size (for ¾” ? 1”). Carbon Steel Heat Treated Extractor Sizes: #1 (for 1/8” - 1/4”), # 2 (for 1/4” ? 5/16”), #3 (for 5/16” ? 7/16”), #4 (for 7/16” ? 9/16”), #5 (for 9/16” ? 3/4") and #6 size (for 3/4” ? 1”). HSS Twist Drill Bits: 5//64”, 1/8”, 5/32”, 1/4”, 9/32” and 3/8” Easily Removes Broken Screws Multi-fluted Extractors Case Included