Neewer Transferring Cable Connection Cable Release for Battery Grip MB-D31 MB-D51,for Nikon D3100 D3200 D5100 D5200 D5300 SLR Camera Compatible with Nikon D3100 D3200 D5000 D5100 D5200 D5300 SLR Camera.^Works with Battery Grip MB-D31 MB-D51.^Length(approx.):8cm / 3.15"^Weight(approx.):35g / 1.23oz^Stand-by Cable for your camera and battery grip. Makes vertical shooting more comfortable.Camera not included.