Amazon.com : The Flash X-Tender (Better Beamer) FX-4 Flash Output Booster for the Nikon SB-600 and SB-800 Flashes with Lenses 300mm : Camera Flashes : Electronics
The Nikon Creative Lighting System, 3rd Edition: Using the SB-500, SB-600, SB-700, SB-800, SB-900, SB-910, and R1C1 Flashes: Hagen, Mike: 9781937538668: Amazon.com: Books
Amazon.com : Nikon SB-800 AF Speedlight for Nikon Digital SLR Cameras - Old Version : On Camera Shoe Mount Flashes : Electronics
Amazon.com : 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 : Electronics
Amazon.com : Foto&Tech Soft Mini Flash Bounce Diffuser Cap Compatible with Speedlight Nikon SB-900, SB-800, SB-910,Canon 580EX II, 600EX-RT,430EX II, Pentax AF-360FGZII, Olympus FL-600R, Panasonic DMW-FL360L : Electronics
Amazon.com : PhotoTrust 8"×8" (20cmX20cm) Universal Collapsible Round Studio Softbox Flash Diffuser for On Camera or Off Camera Flash Gun Compatible with Nikon SB-500 SB-600 SB-700 SB-800 SB-900 SB-910 Canon Speed :