Are you still looking for some professional and practical fish tank bubble air stones? Are you in search of some sturdy, trustworthy tools that provide fresh air for pet ? , ! Our professional air stones can meet your needs. They are one of the for you. Features -Color: Golden+White. -Material: white . -Size: About 15.00X3.80X3.80cm/5.89X1.49X1.49inch; 7.4x3.8x3.8cm/2.91x1.49x1.49inch. -Note: This product includes 2pcs in total, one is small size and the other one is middle size. -Adopted of premium white material, practical and durable with . -Increasing air flow circulation to oxygenate water that is beneficial to pet . -It is used to increase oxygen in the fish tank, and is used with air and oxygen aeration device. -A great way to add oxygen to your aquarium, fish tank, hydroponic and circulation system. -The bubbles are uniform, small and dense, with good oxygenation effect. Package list: 2 tank air stones