opteka sb-1 mini universal studio soft box flash diffuser for the nikon sb-900 sb-800 sb-700 sb-600 sb-400 sb-700 sb-900 sb-910 flash units - Walmart.com
Nikon SB400 Speedlight
Nikon SB-400 AF Speedlight Flash Unit for Nikon Digital SLR Cameras -T
Used Nikon SB-400 Speedlight Shoe Mount Flash SB400 in 'Excellent' condition
Nikon SB-400 Speedlight Essential Kit B&H Photo Video