These PVC couplings are exactly what you need for connecting 1-inch schedule 40 pipes! The 10-pack is super convenient - you always seem to need more couplings than you think for any plumbing project. Made from high-quality PVC, they have excellent corrosion resistance and are much lighter than metal fittings. What's great is they meet ASTM D2466 and D1784 standards and are NSF certified, so you know they're safe for potable water systems. The socket-to-socket design makes joining pipes straightforward - just use PVC primer and solvent cement for a permanent, watertight seal. I've used these for irrigation systems, pool plumbing, and general water line repairs, and they've held up perfectly. The white color is standard for potable water applications, and the construction is solid with no thin spots or manufacturing defects. They're rated for cold water systems up to 140°F, making them suitable for most residential and light commercial applications. If you're doing any PVC plumbing work, having these couplings on hand saves multiple trips to the hardware store. The quality is consistent across all 10 pieces, and they fit standard 1-inch schedule 40 pipe perfectly. For DIYers or professionals, these couplings offer reliable performance at a very reasonable price. They're non-toxic, easy to work with, and much quicker than trying to repair damaged pipe sections. Definitely recommended for anyone working with PVC plumbing systems - the 10-pack quantity means you'll have spares for future projects too!