Need to connect different pipe sizes? This simple but essential brass adapter does just that! One end has a 1/2 inch female NPT (National Pipe Taper) thread, and the other end is a 15mm (approx. 1/2 inch) male connection. It's perfect for plumbing projects where you're joining pipes, hoses, or fittings of these two common sizes. Made from solid brass, it's durable, corrosion-resistant, and provides a reliable seal (use thread seal tape for best results). Commonly used as a replacement part for various pumps and systems – it even matches the part for Whale Pumps models WX1533B and WHAWX1533B. A handy little fitting to have in your toolbox for DIY repairs, irrigation, or connecting appliances. Just make sure the threads and sizes match your project before you buy!