This Apollo stop valve pack includes 20 pieces of 1/2" PEX-B Barb x3/8" Quarter-Turn Straight Stop Valve for plumbing and fixtures. Made of brass material, these valves are corrosion resistant and lead-free, ensuring durable and safe use. The polished chrome finish adds a sleek look to your plumbing system. These valves are compatible with barb x comp connections, making them easy to install. Get this high-quality stop valve pack for your plumbing needs today!