Steel expansion sleeve with internal thread, white galvanized. Substrate: uncracked concrete, natural stone. Advantages - properties: very quick and easy installation - just a hand nailer and a hammer, small anchoring depth shortens the time needed for installation and allows you to reduce work costs, suitable for installation using screws with metric thread or threaded rods, allows for disassembly of the element and possible reassembly, possibility of embedding the anchor flush with the surface of the substrate or deeper, anchors up to M12 in size are perfect for installing suspended ceilings. Material: galvanized steel, white galvanized. Examples of application: fastening of air conditioning, ventilation, water supply, heating, sanitary installations, pipelines, cable ducts, pipes, ceilings and suspended structures, scaffolding, grates, barriers, gates, shelves, screens, steel structures, rails, supports, etc.