This Britool Expert by Facom E113756 is a 1/4" drive metric Hex socket with an 8mm size. It is a long reach socket designed for manual use. Made from chrome vanadium steel with a high chrome finish, it features an OGV Profile which ensures that tightening torque is applied to the sides of the nut rather than the angles. This socket conforms to several standards including ISO 2725-1, DIN 3124, ISO 1174-1, ISO 1711-1, and ISO 691. The dimensions are: Size: 8mm, Length: 49.5mm, Weight: 27g.