The Zoom Action plug-in flash tube is designed for the ZOOM Action Flash Head. The ZOOM ACTION flash tube offers a very short flash duration for action freezing photography. The new A (action) tube is a single twin-pole plug-in flash tube with even light distribution. Features Flash Tube ZOOM Action For Zoom Action Head 20193 Up to 3000 Ws maximum load. UV coated. User replaceable Plug-In version. Heavy duty electrodes for best possible colour stability and hard use. Single twin-pole plug-in fla