7 Pack Aquarium Air Pump Airline Tubing Replacement with Aquarium Air Stones Aquarium Check Valves for Dual Outlet Aquarium Electric Air Pump Fish Tank Aerator Buckets Oxygen Air Bubbler
Package Include:7 pcs aquarium air pump accessories（air tube*1（4m/13ft）+check valve*2+20mm air stone*2+40mm air stone*2）
Size: Air Stone: Diameter 4mm/0.16in, Check Valve: Diameter 4mm/0.16in, connected to standard inner diameter 4mm/0.16in tubing
Air Stone Material: Made of emery material, Air Stone is durable, has good air permeability, and can produce a large number of fine bubbles, increase oxygen levels, and promote healthy water conditions
13-feet air tube: 4mm/0.16in tubing, 13-foot length, can be DIY cut as needed to meet the use
Uses: Increase the amount of air in the water and make the aquatic life of the Aquarium more active
