7-PC Damaged Hex Screw Extractor Set;1/4″ shank 50mm hex extractors 1.5, 2, 2.5, 3, 4, 5, 6mm;No need to drill holes if the screw holes hasn’t been enlarged or fully rounded, just use the tools directly;Made from high grade silicon alloy steel and heat-treated;All contents are chrome-plated which provides ultimate anti-rust capacity. Stored in a compact and robust case