Package content: 5 pieces. Aerator tap outer diameter: 23.5mm, height: 14mm, thread size: M24. Fits perfectly to a 24mm 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 for durability and resistance. High-quality wrench: Fitting wrench constructed from chrome carbon steel ensures long-lasting performance. More durable than plastic alternatives. Provides secure grip without slipping or scratching. Included assembly wrench allows for easy installation, even for beginners. Features: Operates quietly and helps conserve water. Delivers sufficient air bubbles to minimize splashing and water erosion. Effectively filters impurities. Provides a steady, uniform water flow. Wide usage: Compatible with kitchen sink faucets and washing machine connections for switching water flow between faucet and hand shower.