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STAHLWILLE Bit Holder 5/16' - 1/2'Square drive socket, for hand use only, for BITS-Screwdriver bits with outside hexagon 1/4 or 5/16 DIN 3126/ISO 1173 C 6.3 or C 8, Chrome Alloy Steel, chrome plated. Internal hex drive with a collar-thrust spring (registered design). Bits are easy to insert, locksecurely in position and can be removed just as easily; even hex bits with a wide groove (Type E, DIN 3126/ISO 1173).
