Metaklett (from , "metal" and , "Velcro ribbon") is a fastening material made of steel that acts on a similar principle to conventional hook and loop fasteners. It was developed by Reinz-Dichtungs-GmbH, Technische Universität München, Hölzel Stanz- und Feinwerktechnik GmbH & Co. KG and Koenig Verbindungstechnik GmbH. Metaklett is claimed to support shear strength 35 tonnes per square meter at temperatures up to 800 ðC. It consists of two complementary strips of 0.2 mm thick perforated steel with catcher and holes. A second variant consists of two strips with protruding brushes and hooks. There is also a hybrid variant with one metal and one synthetic fleece ribbon.
In the context of the development Dr. Christoph Karl Hein compiled his dissertation "Systematic analysis to metallic hook-and-loop bondings".