Universal Plug| App8500 Pack of 96 Size: 24 x ∅ 5mm Rawlplug Yellow Plastic Wall Plugs 5Mm Card Of 96 | App8500 The Rawlplug Uno Plugs are a truly universal plug which fixes into any wall, ceiling or floor. Suitable for use in: Concrete, brickwork, stone, blockwork, plasterboard. It has a unique design with expansion throughout the length of the plug. It expands at the top giving instant grip. Anti rotation features prevent spinning in the hole.