Manfrotto 195 5/8 inch Male to 1/4 inch -20 Screw Adapter

The Manfrotto 195 Adapter fits into the 5/8 inch (16 mm) receiver of the Manfrotto Sky Hook 2970, allowing the use of cameras or accessories with a 1/4""-20 female tap.

Price: 11.95 from Wex Photo Video