NIBCO 1/2" Copper Coupling with Stop (10-Pack) is designed for connecting copper pipes with a built-in stop to ensure precise fitting. This coupling comes complete with a sweat/solder fitting, making it easy to install and providing a reliable, leak-resistant connection for your plumbing needs. for both professional plumbers and DIY enthusiasts, this product durability and efficiency in one convenient pack. Model Number: W00720J