[SPECIFICATIONS] – 7-PC Damaged Hex Screw Extractor Set comes with 1/4″ shank 50mm hex extractors 1.5, 2, 2.5, 3, 4, 5, 6mm 1/4″ shank 50mm extractors T10, 15, 20, 25, 27, 30, 40. [PIECE OF MIND] – No need to drill holes if the screw holes hasn’t been enlarged or fully rounded, just use the tools directly. [HEAVY DUTY] – Made from high grade silicon alloy steel and heat-treated. [ANTI-RUST] – All contents are chrome-plated which provides ultimate anti-rust capacity. Stored in a compact and robust case. [TWIST END DESIGN] – The twist end design can extract the damaged hex screws which haven’t been rounded fully. Users can use the tools directly without drilling holes on the screws.