Levelling elements for fixing to the ground with base in black glass fibre reinforced polyamide-based technopolymer, threaded AISI 304 stainless steel articulated stem with adjusting square and option of having it without or with NBR rubber no-slip disk fixed to the base.
The fixing is carried out by means of holes, closed by a diaphragm (removable with an awl) to prevent the deposit of unsanitary residues if not used.