ShopThe Linkstar RTC-1055-450L UV-FF Flash Tube is suitable for the FS-400D, FS-400A, FF-400D, FF-400DD, FF-400A and FF-400L studio flash units.Linkstar Flash Tube RTC-1055-450L UV-FF for FS-400D/A and FF-400D/DD/A/LSKU: 561217£35.96PriceOut of Stock