Description High Quality Wall Plugs are used with all screw fixings in masonry and concrete. M-teeth combined with side-links and screw-guide, ensure entire plug face is forced against walls of hole. Recommended to use in concrete, natural stone, brick, and solid materials including lightweight concrete, brickwork and aerated concrete blocks. No Zinc or Stain Will Catch these Ever Best Grip and Durable Material: Plastic Plug No# 12
