Product specification:
Color: Transparent + Black (as shown in the product picture)
Material: Sponge, gravel, plastic
Total height: 80mm/3.14 inch.
Bottom Diameter: 50mm/ 1.97inch

Package includes: 4 Pcs Mini Sponge Aquarium Filter.

Product characteristics :
(1) Easy to install, just install the sponge filter on the equipment, open the air pump can be used together.
(2) Easy to clean, just clean the sponge in the tank and squeeze, can be cleaned once a month.
(3) There is no noise when working, because it works with air as the power.
(4) High-density porous sponges can catch microorganisms and fine particles in the fish tank, increase oxygen concentration and keep the fish tank clean.

Warm reminder:
1. All our products are measured manually, there may be 1-2mm error, please understand.
2. Due to the different display, the product color may be slightly different, please understand.

100 percent satisfaction guarantee:
We have every confidence in our products and we believe that you will be very satisfied when you receive them. Within 30 days of receiving the product, you have the option to contact Amazon for a return and refund if there are any problems. Thank you for your choice, I wish you a happy life!