Schrader Valve Core Screwdriver 10-in-1 tools are small and fit conveniently in a pocket. Each arm unfolds up to 180-Degrees or 90-Degrees for extra tight fasteners. Each arm has four bit drivers and two different styles of nut drivers.PRODUCT FEATURES:- Great for HVAC and other industrial applications. - Includes 5/16'' & 1/4'' nut drivers, #1 & #2 Phillips, 1/4'' & 3/16'' slotted, Shrader® valve core removal/installation-extractor, and #1 and #2 square-recess. - Driver arms fold conveniently into the body for easy storage. - Unfold each driver arm up to a full 180 degrees for straight on driving power, or at 90 degrees for extra leverage on stubbon fasteners. - The quick release button easily unlocks a fully extended driver arm. - Each arm contains four interchangeable bit-styles and two nut drivers. - Fits easily into your pocket.