The Hansen Hex Screw Plug is ideal for any situation where a reliable threaded connection is necessary. Features Precision Heavy Duty Tapered Threads give a Strong Reliable Seal Manufactured from a Raw Material Approved For Use With Potable (drinkable) Water Manufactured from High-Quality Glass Fibre Reinforced Nylon giving a Weather, Termite, Fungi & Bacteria Resistant Common Applications Include Horticultural, Agricultural, Irrigation, Marine & Plumbing Material strong enough to minimise potential cross threading WRAS - Approval for use with potable (drinkable) water as they will not leach contaminants into the water. Suitable for use above or below ground in varying operating pressures and temperatures Strong, Lightweight and Compact