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DIN 3124 / ISO 2725 1/4 6.3 DIN 3120 / ISO 1174 With internal hexagon with Dynamic Drive profile. SB = SB packaging Hexagon Metric,

DIN 3124 / ISO 2725 1/4 6.3 DIN 3120 / ISO 1174 With internal hexagon with Dynamic Drive profile. SB = SB packaging Hexagon Metric,