These conels are made iln thermo ection 2012 rubber and they are specifically designed to protect the wishbones and the speargun barrel form friction, when shooting.
The result is a much quieter shot.
When using a double sling, they also protect the slings from the wishbone, avoiding wear of the slings.
These thermo rubber cones are specifically designed to protect the wishbones and to avoid friction between the wishbones and the speargun barrel.
They are particularly useful when a double sling is used.