Material - Made of durable ABS, sturdy and safe to use, the bubbler is easy to remove and fix, and has a long service life. 18.5MM 8-Piece Set (6 Aerators + 2 Wrenches) Please Note: To ensure these aerators are compatible with your faucet, please carefully measure your sink faucet size and thread type before placing an order. PRACTICAL AND EFFECTIVE - Used to replace or clean clogged aerators, replace or clean clogged air, it can reduce the impact of water, generate a lot of air bubbles to prevent water splashing, effectively repair low flow faucets, let you have smooth flow again. APPLICATIONS - Ideal for faucets of bathroom, toilet and kitchen faucet aerators to ensure smooth flow. Compatible with most cache aerators such as Neoperl, Delta, Moen, Kohler, American Standard, Danze, Groche Cache aerators and more. EASY TO USE - It allows you to complete the removal and installation in minutes, and saves you the huge cost of hiring a plumber.