The part is a metal clamp that secures and fixes in position the upper height adjustment piece for the Valrom 1100 inspection manhole.
Manufacturing standard: STF 4/2004
Materials: 25 x 3 steel angle iron welded and electrochemically galvanized after welding.
Includes fasteners: M6 x 50 screws – 2 pcs. and M6 nuts – 2 pcs. made of galvanized steel.