This SmallRig Cold Shoe comes with two 1/4" slots that let you attach it to the optional SmallRig Cage for the Panasonic GH5/GH5S (2646), Top Plate for the Blackmagic Ursa Mini/Mini Pro (1958), Side Plate for the Blackmagic URSA Mini/Mini Pro (1854), New Double-Shoe Handle (1625), or NATO Clamp (1885) with two 1/4"-20 screws.
Two arrowheads point to the built-in retention bump, which helps hold accessories until they are tightened in the shoe. The cold shoe allows you to use hot shoe accessories, and when mounted, the electrical contacts clear the mounting screws protecting the contacts.