Bahco 59/S31B 31 Piece Screwdriver Bit Set & Holder. 1/4" hex drive DIN 3126 and ISO 1173, style C 6.3. 1/4" square socket adaptor, ball type for regular nut driver socket (style C 6.3). Includes 31 pieces: 29 bits, 1 magnetic quick release bit holder and 1 socket adaptor 1/4".
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