The fischer metal cavity fixing HM is a flexible cavity fixing with metric screw for all panel building materials with a wall thickness of 3 to 50 mm. The plug is set in the pre-positioned installation using the installation pliers fischer HM-Z 1. The plug is pulled against the panel building materials using the pliers. The expanding arms swing open and press onto the reverse side of the board. Alternatively, installation is also possible with a screwdriver or cordless screwdriver. The fixture can be fixed and released multiple times thanks to the metric internal thread. The fischer metal cavity fixing HM is suitable for fixing lighting, pictures and light shelves indoors. · · · Due to the extensive range, the HM is suitable for board building materials with a thickness of 3-50 mm and thus suitable for a number of different applications. · · The metric internal thread allows the attachment to be removed and refitted several times, thus offering the best possible flexibility. · · The HM’s expanding arms ensure a large supporting surface, thus allowing a high load-bearing capacity. · · The claws around the edge of the fixing penetrate the board building material, preventing the fixing from rotating, thus ensuring a secure installation.