Fischer 567637 CZV D20 Envelope Collar, Grey, diametro tubo 20 mm

Spacer Collar for Electrical Pipes and Multilayer Tubes, Galvanised Steel with Screw and Plug Supporting materials: Concrete, Solid brick brick, Calcium silicate filled brick, Solid block in lightened concrete, Semi-solid brick (vertically perforated), Semi-filled brick (vertically perforated), Calcium silicate, Hollow block in lightened concrete, Autoclaved aerated concrete (aerated concrete), Natural stone with compact structure. Operation: Drill the holder as indicated. Insert the dowel, insert the double thread screw and place the collar. Technical details: Thread: M6 Hole diameter: 6 [mm]Clamping range: 20 [mm] Box contents: 10 x collars with screws and dowels, Manufacturer: Fischer