Package content: 5 pieces. Aerator tap outer diameter: 23.5 mm, height: 14 mm, thread size: M24. Adapts perfectly to a 24 mm thread. High-quality material: Faucet jet regulator features a chrome-plated brass body and stainless steel filter, making it non-toxic, abrasion-resistant, rust-resistant, durable, and reliable. Mounting wrench is made of chrome-plated carbon steel, providing abrasion resistance and reliability. The fitting wrench is made of chrome-plated carbon steel, offering long-lasting performance and superior strength compared to plastic tools. It provides secure grip without slipping or scratching. The included assembly wrench ensures easy installation, even for beginners. Features: Reduces noise and conserves water. Delivers optimal air infusion to prevent splashing and erosion. Filters impurities effectively. Provides large, uniform water flow. Wide usage: Suitable for kitchen sink faucets or washing machine faucets to switch water flow between faucet and hand shower.