This very well camouflaged and carefully designed back lead can be easily placed on your mainline. The top part of this lead has been made from a very smooth material and has an optimised shape to make sure that it glides over the mainline with as little resistance as possible.
The sleeve which connects the two parts is quite stiff and designed to keep together. Only with a reasonable amount of pressure will the two parts separate from each other. By pushing the sleeve further over the top part of the back lead, the fisherman can increase the amount of pressure needed to release.