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Kirk L-Bracket for Nikon D800E with MB-D12 Battery Grip 
 
Machined from a single piece of lightweight 6061T6 aluminum 
L-Bracket allows the use of a camera strap 
14-20 screw for connecting to battery grip 
Sensor-centering lines for both horizontal and vertical orientation These help you position the camera properly within the ball heads Arca-style clamp