The BL-D100 L-Bracket fits the Nikon D100 without MB-100 battery pack attached. If you are using your Nikon D100 with the MB-D100 battery pack on your D100, you should select the BL-D100G L-bracket instead. Custom-made one-piece bracket machined from light weight 6061-T6 aluminium, weight 85g. Allows full access to all switches & battery drawers.