The Kirk L-Bracket for Nikon D7100 Digital Camera features a PZ-155 camera plate and an LBS-D7100 L-bracket side that allows you to switch from portrait to landscape orientation without having to adjust your ball head. It fits Arca-Swiss-style quick-release clamps and features a 1/4"-20 stainless steel allen screw and 1/4-2-" socket. This L-Bracket is made with light weight 6061TG aluminum.