Expert BRIE117060B Bi-Hexagon Socket 1/2in Drive 17mm The Britool 1/2 inch drive 12-point sockets (metric) are crafted from chrome vanadium steel and finished in high chrome. The OGV® profile allows tightening torque to be applied to the sides rather than to the angles of the nut. This product is for manual use only. ISO 2725-1 DIN 3124 ISO 1174-1 ISO 1711-1 ISO 691. The Britool BRIE117060B Socket 12 Point Standard 1/2 inch Drive 17mm has the following dimensions: Size: 17mm Length: 38mm Weight: 76g