Head/rod connection obtained by conical press-fitting with force.
Head/cable connection made by striking a stainless steel peg located in the upper part of the head. This strike guarantees the connection head/posts and head/cable.
For earthing rods: Ø 17,3 mm copper-steel and Ø 16 mm stainless-steel.
Model TFTI-16/17: the head/rod connection fits inside the earthing rod.