Gadget Place Two-in-one Camera Stand and Clamp for Olympus PEN E-PL7 E-PL6 E-P5 OM-D E-M10 E-M1 Two ballheads are equipped. Simply one twist secures both ballheads. One can put this clamp on most objects such as circular column, flat TV, laptop computer, table, glass window and more. There is a locking mechanism for securing and releasing the two legs. Maximum width of the clamp is 63mm. Weight: 126g.