High-strength slimline nylon wall plugs with 2-way expansion. Anti-rotation lock installation safety. Suitable for use in concrete and masonry. Includes sizes 4, 5, 6, 7, 8, 10 and 12mm. Handy storage case with compartments. High-strength slimline nylon wall plugs with 2-way expansion. Anti-rotation lock installation safety. Suitable for use in concrete and masonry. Includes sizes 4, 5, 6, 7, 8, 10 and 12mm. Handy storage case with compartments.