You can choose between three different plumb heads; the heaviest with which to reach medium-high depths and even areas with currents, and the least heavy for shallowest depths.
They come assembled with the plumb head glued to the body and placement of the Texas hook.
The bodies are all 125 mm. The 100 gr heads measure 40 mm so the total mount measures 165 mm. The 140 gr heads measure 49mm so the overall mount measures 174mm.