• Faucet aerator keys made of ABS material, durable and comfortable to use. • The faucet filter replacement comes with wrench tools, easy to remove and install. • Suitable for homes, hotels, public facilities, and many other places. • Aerator removal tool dimensions: 16 cm x 7.2 cm x 1.5 cm. • Package content: 1 eight-shape removal tool, 2 faucet aerator removal wrench tools, 12 faucet aerators, 5 cache faucet aerator keys. • Size for aerator keys: M16.5, M18.5, M21.5, M22.5, and M24. • Size for faucet aerators: M24, M21.5, M18.5, and M16.5. • Size for eight-shape removal tool: approximately 160 mm long. • Size for wrench tools: approximately 100 mm long.