Features and Benefits: 1/4" shank 50mm extractor T25 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 Chrome-plated which provides ultimate anti-rust capacity The twist end design can extract the damaged Torx screws which haven't been rounded fully. Users can use the tools directly without drilling holes on the screws .