Brand new and high quality.<br />Suitable for freshwater￡? saltwater/reef aquariums and hydroponic use.<br />Unique design and fine durability.<br />Increase oxygen levels and PH￡? lower CO2.<br />An important instrument to successfully keep aquatic fish for respiration process.<br />Suitable for any form of aquarium.<br />Total length: 3.9cm<br />Bottom diameter: about 0.8cm<br />Top diameter: 1.5cm<br />Material: silicon carbide superhard corundum sintered by high temperature <br />Color: sent randomly<br />6 x Air stone<br /><img src="//agdetail.image-gmkt.com/m430/483/336/842336483/img/agdetail.image-gmkt.com/483/336/842336483/img/img6.eachbuyer.com/x7/p45/v401_1.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/483/336/842336483/img/agdetail.image-gmkt.com/483/336/842336483/img/img6.eachbuyer.com/x7/p45/v401_2.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/483/336/842336483/img/agdetail.image-gmkt.com/483/336/842336483/img/img6.eachbuyer.com/x7/p45/v401_3.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/483/336/842336483/img/agdetail.image-gmkt.com/483/336/842336483/img/img6.eachbuyer.com/x7/p45/v401_4.jpg" />