Powerextra Brand New Vertical EN EL9 Battery Grip For DSLR Nikon D40 D40X D60 D3000 D5000 Quick release battery grip can hold 2 pcs EN-EL9 or 6 pcs AA-size battery backup, doubling the battery capacity for extending more shooting time A tripod socket on the bottom of the grip can be mount on a tirpod, easy install and uninstall, horizontal and vertical shutter fit different shooting experience Same function on the grip as the camera, not affected any function of the original camera , Feature a variety of operating control: shutter button, Main Dial, multi-controller, and multi-function button Battery grip only for Nikon D40 D40X D60 D3000 D5000 DSLR camera, Note: battery grip only, not including the battery, camera Vertical firing release with lock, the surface material:PC + GF10 + striae process, have a superior holding feeling