FaCommand FCMS19 Bi-Hexagon Socket 1/2in Drive 19mm These FaCommand 12-point OGV sockets have a 1/2 inch drive to fit 1/2 inch ratchets. They are high quality and ideal for tightening and loosening bolts nuts and other fasteners. The sockets are available in a range of metric sizes. Performance: conform to ISO 2725-1 DIN 3124 and NF ISO 2725-1. The FCMS19 socket has the following specifications: Socket size: 19.0mm. Length: 36mm. Weight: 69g.