FaCommand FCMJ24 Bi-Hexagon Socket 3/8in Drive 24mm These FaCommand 12-point OGV sockets have a 3/8 inch drive to fit 3/8 inch ratchets. They are high quality and ideal for tightening and loosening bolts nuts and other fasteners. The sockets are available in a range metric sizes. Performance: conforms to ISO 2725-1 DIN 3124 and NF ISO 2725-1. The FCMJ24 socket has the following specifications: Socket size: 24mm. Length: 33mm. Weight: 86g.