Bracket with 26 mm dovetail (insert side) interface on 15 mm rod, attaches to ARRIHEAD rosette, can be pivoted on rosette or slid along rod. For use with 26 mm shoe-mounted accessories such as UMC-3 K2.52080.0 1x Adapter UMC 3/8in K2.52083.0 1x Dovetail Shoe 3/8in thread or Wired Handgrip Attachments WHA-2 / WHA-3.