Package including: 12 pieces faucet filter cache aerator of Male 16.5mm/ 18.5mm /21.5mm /24mm and meet your different faucet sizes needs. 5 pieces cache aerator wrench tools for removing and install different sizes of cache tap aerator. Easy to installation: Faucet filter replacement comes with wrench tools which allow you to complete removal and installation in minutes. No need to have a plumber. You can done it within 1 minutes. Made of high quality ABS material : Cache faucet aerator keys are made of durable ABS, strong and sturdy. Long-lasting and wont easily break. Wide application: Flow restrictor insert faucet aerators can be fitted to kitchen sink faucets, bathroom taps and lavatory faucets spout head, Compatible with Neoperl, Moen, Kohler, American Standard, Danze, and Groche Cache Aerators. Non-Splashing: These mixer faucet aerators mix the water and air well to create lots of bubbles and restrict the flow of water from taps without reducing water pressure. Prevent water splashing and saving water. Great faucet aerator tool set to replace or clean the blocked aerators, effectively fix the low flow faucet and gives you smooth flow again. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!