5 Piece, Bolt Grip Bolt Extractor Base Set, Frees Rounded Off, Rusted Tight Or Painted Over Bolts, Reverse Spiral Flutes Are Designed To Bite Down To Provide Maximum Gripping Power, High Carbon Steel For Greater Durability & A Longer Life, Universal Lobular Design Fits All Types Of Fasteners, Set Includes: Extractors To Remove Bolts Sizes: 11 mm, 14 mm, 16 mm, 3/8", 7/16", 1/2", 9/16", 5/8" In Drive Size 3/8" & Carrying Case.