Clip on flow modifying adapters for VorTech MP10, MP40 and OctoPulse 2 and 4 powerheads. These nozzles will broaden the fairly narrow flow of the Eco Tech VorTech or Reef Octopus OctoPulse stock powerhead. They are available in medium angle flow and wide angle flow. These clip directly to the stock guards and are printed in reef safe black ABS plastic.