Mungo Premium Grade MQ Quattro® Nylon Plug Wall Anchors are premium Swiss Quality anchors made from high-grade polyamide PA6. MQ Quattro® Nylon Plug Wall Anchors are suitable for all building materials and have the highest possible retaining values in the lower and middle load areas. MQ Quattro® Nylon Plug Wall Anchors can be used for indoor and outdoor applications in temperatures ranging from -40 degrees fahrenheit to 212 degrees fahrenheit.