Size: 1/4" -1/4" MaleStandard 1/4"-20 Male to 1/4"-20 Male Threaded Tripod Screw Adapter Precision made 1/4" Male to 1/4" Male Threaded Screw Adapter Standard tripod mounting thread Suitable for the connection of a variety of 1/4-20 screw holes for your dslr configurations Solid and durable Dimension 16 mm x 20 mm (diameter x height) Package Includes pack of 1/4"male to 1/4" male screw adapter