Standard Plasplug Wall Plugs Size 6-12. A packet of concrete masonry fixing for screw size No. 6, 8, 10, 12 (3.5mm- 5.5mm). Engineered to deliver high tensile fixings in concrete and masonry applications but suitable for use in a variety of additional materials. Features: Available in display packs of 50 x 40, or single packs of 40. Suitable for use with masonry.