Cool-Ballhead-V4 is a Multi-Function Double Ball Head with bottom clamp and 1/4" screw. Cool-Ballhead-V4 can Mount Monitors and led Lights to DSLR, 360o Articulation. 1/4"-20 Screw on Top.It can be mounted directly to a DSLR and allows for the attachment of a full array of video accessories. Used to attach...