1Made of high quality stainless steel, it is durable, wear-resistant, corrosion-resistant and can be used for a long time. 2The 1/4in barbed inlet can be connected with oxygen regulator or air pump. 32 micron aeration stone, it can be directly connected with any pot, pump or counterflow/plate wort chiller. 4Excellent workmanship, stable performance, safety and reliability, good sealing and leakproof performance. 5Perfect home brewed beer accessories, this set can help you brew authentic beer.Condition: 100% Brand NewItem Type: Homebrew AccessoriesMaterial: Stainless SteelEnd: 1/4in Barb, 12mm Pagoda HeadWeight: Approx. 236g / 8.3ozSize: Approx. 8x13cm / 3.1x5.1in4 x Homebrew Accessories1.Please allow 0?1 inch error due to manual measurement. Thanks for your understanding.2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ording.