ForgeFix Nylon Wall Plug Rimless - ForgeFix 100RIM840, These rimless wall plugs from Forgefix 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.
ForgeFix 100RIM840 Nylon Wall Plug Rimless M8 x 40mm Bag 100