Screwdriver Nut Driver 11 in 1 has Phillips and Square Bits, Nut Drivers, Core Remover, More Klein Tools 32527 Versatile 11-in-1 tool for the professional Includes unique style bit for installation/removal of common TR-4 Schrader valves and aggressive thread extractor tip for backing out broken cores Great for HVAC and other industrial applications Blast finish bit tips provide a firm hold and reduce cam out Contains: 3/16-Inch (5 mm) and 1/4-Inch (6 mm) slotted, #1 and #2 Phillips, 1/4-Inch (6 mm), 5/16-Inch (8 mm) and 3/8-Inch (10 mm) nut driver, #1 and #2 square, core removal/installation, core extractor