Specifications:

• Size: Approx. 40mm x15mm (D*H)
• Material: Mineral stone + Plastic
• Color: Gray
• Net Weight: Approx 32g
• Suitable for inner diameter 4mm soft tube.
• Package included:1 x Air Stone

Features：

• 100% brand new and high quality
• Increase oxygen levels, lower CO2 and raise pH
• It is an important instrument to successfully keep aquatic fish for respiration process
• Durable, washable and sintered by high temperature, different from other air stones
• Creates bubbles in fish tank while attached to an air pump
• Creates water currents and dazzling underwater scenes
• Easy and convenient to use.