Feature 1、Made of stainless steel, it is durable, wear-resistant, corrosion-resistant and can be used for a long time. 2、The 1/4in barbed inlet can be connected with oxygen regulator or air pump. 3、2 micron aeration stone, it can be directly connected with any pot, pump or counterflow/plate wort chiller. 4、Excellent workmanship, stable performance, safety and reliability, good sealing and leakproof performance. 5、Perfect home brewed beer accessories, this set can help you brew authentic beer. Condition: Item Type: Homebrew Accessories Material: Stainless Steel End: 1/4in Barb, 12mm Pagoda Head Weight: Approx. 236g / 8.3oz Size: Approx. 8x13cm / 3.1x5.1in Package List 4 x Homebrew Accessories Note 1.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.