The WHO screw from Rawlplug is user-friendly doesn't require any screws. It's perfect as a time-efficient fixing solution.
\t- Countersunk Head
\t- Made of hardened steel, electro-zinc coated
\t- Imposes less stress on substrate during installation due to no expansion force
\t- Small hole diameter giving high loads
\t- Easily removed for temporary works
\t- Suitable for use in pre-drilled 6mm diameter concrete, full and hollow bricks, stone and structural clay tile and without pre-drilling in aerated concrete and timber
\t- Applications include use with door and window frames, suspended ceilings and lightweight steel angles
