Cavity fixing 1240001 (set of 25 pieces) is supplied with a screw (M3, length: 50 mm) and does not require any special tool for installation This cavity fixing is to be used for installations in one or several layers of plasterboard and in other board materials Color: red/white Material: PA (polyamide), Screw of electroplated steel Installation: Drill a hole with a diameter of 6 mm and push in DUOMAX cavity fixing with the aid of the screw. Remove the screw and mount the fixture