Copper End Feed 45� Elbow � 15mmThese copper end feeds are�suitable for both hot and cold water-based plumbing systems, as well as low-pressure gas installations and central heating systems. Use either a Leaded Solder (for central heating systems) or a Lead-Free Solder (for hot and cold (potable) water/appliances) and a high-quality Plumbing Flux.Use a high-quality Solder Mat to protect the surroundings and walls from the heat of the gas torch.Other sizes Available: End Feed 45� Elbow - 15mm, 22mm, 28mm and 35mm.