Water-pressure-tight wall bushing with MV clamp made of StSt (V4A) for leading earthing conductors / equipotential bonding conductors through walls and brickwork, with M10 threaded rod made of StSt. For subsequent installation through borehole (Ø14 mm) or, if necessary, through spacer of the formwork. Pressurised water test up to 1 bar represents an installation depth of 10 m in stagnant water.