Mini Borg tube band, with 1/4"-20 threaded socket at the bottom and M6 threaded socket at the top. An adapter [ Borg prod. no. 3105] may be used to interface the M6 socket to cameras or compatible accessories.
Dimensions of the tube band are 30mm width and 60mm ID. The ID is compatible with the Mini Borg drawtube (white tube section) as well as M57/M60 extension tubes.