Use this stainless steel 1/4"-20 (F) to 3/8"-16 (M) and 1/4"-20 (M) to 3/8"-16 (M) Screw Adapter Set from CAMVATE to connect cameras, cages, and tripod plates. This set comes with one 1/4"-20 female to 3/8"-16 male adapter, and one 1/4"-20 male to 3/8"-16 male adapter to help connect a variety of gear with 1/4"-20 and 3/8"-16 screws and threads. The edges are knurled for a better grip when tightening.