FaCommand FCMR10 Hexagon R.10 Socket 1/4in Drive 10mm These FaCommand 6-point OGV sockets have a 1/4 inch drive to fit 1/4 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: conforms to ISO 2725-1 DIN 3124 and NF ISO 2725-1. The FCMR10 R.10 Socket has the following specifications: Socket size: 10.0mm. Length: 22mm. Weight: 17.7g.