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, rust resistant, durable and reliable. The mounting wrench is made of chrome-plated carbon steel, providing durability and resistance. High quality wrench: Made of chrome carbon steel, this fitting wrench is long-lasting and highly resistant, offering better performance 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 conserve water. Generates sufficient air bubbles to minimize splashing and water erosion. Effectively filters out impurities. Delivers a steady, uniform water flow. Wide usage: Compatible with kitchen sink faucets and washing machine taps, suitable for switching water flow between faucet and hand shower.