Nylon Universal Wall Plugs 6 x 30mm Pack of 20 are versatile, durable fixings designed to provide reliable performance across a range of solid and hollow building materials. Manufactured from durable nylon, these 6mm wall plugs are particularly useful when the exact base material is uncertain. Their universal design makes them suitable for common substrates including concrete, brick, block and plasterboard, providing one practical fixing solution for a variety of everyday installation jobs. At 6mm diameter x 30mm long, each nylon plug requires a 6mm drill hole when installed into solid materials. Manufacturer technical data recommends a 4.0 to 4.5mm screw diameter for concrete applications.