Brass material: Made from premium brass, these pipe connectors are designed for durability, ensuring a long-lasting and corrosion-resistant solution for all your plumbing needs. Double nipple 1/2 inch size: you will receive 2 double nipples 1/2 inch. The internal thread diameter is approx. 12 mm, external thread diameter is approx. 15 mm. Versatile Application: Perfect for connecting water and gas lines, these brass pipe fittings are also ideal for garden use, providing a reliable solution for irrigation systems and outdoor plumbing. Straight Pipe Hex Fitting: The straight design of the hex fittings allows for easy installation and adjustments, making your plumbing projects quick and hassle-free. Leak-Proof Performance: Engineered for a tight fit, these fittings minimize the risk of leaks, giving you peace of mind and ensuring efficient flow in your pipes., Manufacturer: Culinavog