This is the Anchor Mount (Silver) from Peak Design. It's a lightweight and compact mount that attaches to the bottom of your camera, allowing you to attach Anchor Links compatible straps. It easily secures with a 1/4-inch tripod screw. Used only once, and in very clean condition. The included hex wrench is also included. There is no box, but there are no issues with operation or appearance. ※ The last photo is a usage example. I will carefully package and ship it. Instant purchase is welcome.