Klein 11-in-1 tool, Type: for the professional, Style: Includes unique style bit for installation/removal of common TR-4 Schrader valves, Sizes: 3/16" and 1/4" slotted, #1 and #2 Phillips, 1/4", 5/16" and 3/8" nut driver, #1 and #2 square, core removal/installation & core extractor