The Leofoto XB-38 Ball Head with BPL-50 Quick Release Plate is designed to be used with the Leofoto LX Urban Series tripods but can be mounted to any tripod with a 3/8" mounting stud. The XB Series ball heads feature a panning lock knob and a large ball locking knob with tension control on the inner knob. The laser engraved graduated scale provides precise centering and positioning. The XB Series ball heads are ideal for travelers and those on the go.