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40PC HEX, STAR & SPLINE BITS SET 10640 Description Measurement Range 3/8'' & 1/2'' Drive 3/8" Drive Size 4mm , 5mm , 6mm , 7mm , 8mm , 10mm , 12mm , T20 , T25 , T30 , T40 , T45 , T50 , T55 , M5 , M6 , M8, M10, M12 1/2" Drive Size 4mm , 5mm , 6mm , 7mm , 8mm , 10mm , 12mm , T20 , T25 , T30 , T40 , T45 , T50 , T55 , M5 , M6 , M8, M10, M12 Accessories Size 3/8'' Dr Bit Adaptor, 1/2'' Dr Bit Adaptor Packaged in a heavy duty plastic folding case. CR-V.