If you use a BLACKRAPID camera strap and an Arca-Swiss tripod, then you need this camera plate. It allows you to stay connected while using both camera strap and tripod at the same time. No need to disconnect the strap when you put your camera on your tripod. Go back and forth from camera strap to tripod, without disconnecting the strap. This camera plate attaches to the tripod adapter on the bottom of your camera (or lens if you have a long lens with tripod connection point). And it works with any tripod with an Arca-Swiss head and any BLACKRAPID camera strap with a carabiner connector. Made in the USA. Made of 6061 aluminum with an anodized coating. Measures 1.5 inch x 1.5 inch square on top, plus the loop for carabiner on one side making the overall length 2.25 inches, and is .88 inches high. Weight 3.2 oz Includes attachment screw with Allen wrench to attach and tighten to your camera body.