The Forgefix Rimless Wall Plugs can be inserted to depths below the surface of the base material Their sprung anti-spin fins provide a two-way lock preventing spinning and loosening from overhead applications Due to this precise two-way expansion the plugs are suitable for close to edge applications Made from 100 Nylon APPLICATION Ideal for both lightweight and medium-duty fixing applications Ideal for fixing wall lights shelving and cupboards Often used for satellite dish installation Suitable for most types of threaded screws including multi-purpose general purpose coach screws etc Not suitable for Machine Screw threads