The PROMASTER PROFESSIONAL L BRACKET is machined of high grade aluminum and includes everything you need to properly assemble and connect it. Use this L bracket to attach your camera to a tripod head with a ProMaster dovetail / arca-swiss dovetail type quick release system. Once the L bracket is mounted to your camera you can connect it horizontally or vertically and switch between these positions in just seconds. By keeping your camera centered above the tripod head, even when using a vertical position, you will have a much better balanced rig and better stability.
I use Really Right Stuff and this fits as it should to the curves in the battery grip. Fit and finish seems good, but will have to drag it through the terrain to find out just how good it holds up.