This is the Revolution Remote Glow Plug Adapter.  The Revolution Remote Glow Plug Adapter makes lighting hard-to-reach heli glow plugs easy by allowing modelers to energize the glow plug form a remote location on the heli's frame. It includes everything necessary for installation, including 6" of flexible silicone wire and a rubber insulated glow plug terminal that aggressively holds onto the plug.  These are a must on most of today's helicopters.