Package content: 5 pieces. Aerator tap outer diameter: 23.5mm, height: 14mm, thread size: M24. Fits perfectly to a 24mm thread. : Our faucet jet regulator features a chrome-plated brass body and stainless steel filter, making it non-toxic, abrasion resistant, anti-rust, durable, and reliable. The mounting wrench is made of chrome-plated carbon steel, providing durability and resistance. High quality wrench: Made from chrome carbon steel, the fitting wrench is long-lasting, resistant, and more durable than plastic tools. Provides secure grip without slipping or scratching. The included assembly wrench allows for easy installation, even for beginners. Features: Operates quietly and helps save water. Delivers optimal air mixing to reduce splashing and water erosion. Effectively filters out impurities. Provides a steady, uniform water flow. Wide usage: Suitable for kitchen sink faucets or washing machine connections to switch water flow between faucet and hand shower.