This is a Profoto Replacement 1000Ws Maximum Flashtube for the D1 Monolight.
Most current, professional flash heads and monolights are equipped with user replaceable flashtubes that may simply be plugged into, and unplugged from their sockets. With proper handling, these flashtubes may last for tens of thousands of flashes under normal use.
POCKETWIZARD HSFM3 HOTSHOE FLASH SYNC CABLE 90cm
Profoto Glass plate D1, -300 K 



