IRWIN 394100 Bolt Extractor Set,3/16 to1/2, 10mm,7 Pc
Screw Extractor Set, Extractor Type Reverse Spiral Flute Extractor, Number of Pieces 7, For Bolt Size 1/2 in, 1/4 in, 3/16, 3/8 in, 5/16 in, 7/16 in, Material - Machining Carbon Steel, Container Type Clamshell Case, Drive Size 1/4 in, Drive Type Square
