Specification: Condition: 100% Brand New Item type: home brewing accessories Material: stainless steel End: 1/4inch, 12mm pagoda head Weight: approx. 236 g/8.3 oz. Size: approx. 8 x 13 cm/3.1 x 5.1 inches Package list: 4 Homebrew accessories Note: 1. Please allow for a 0 - 1 inch error due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated the same, the colour of the item shown in the photos may be slightly different from the actual item. Please take the real one as standard.3. Please note that the new type and old type of this product will be sent at random, and make sure you do not mind before ordering. Features Made of Stainless Steel The stainless steel domestic beer brewing line aeration stone is made of stainless steel, it is durable, wear-resistant and can be used for a long time. EXCELLENT PERFORMANCE The 1/4" barbed inlet of stainless steel beer brewing line aeration stone can be connected with oxygen regulator or air pump. Can be Directly Connected to Any Pot The oxygenation diffuser of homebrew accessory aerator kit has a 2 micron aeration stone, it can be directly connected to any pot, pump or countercurrent wort cooler/plate. EXCELLENT WORKMANSHIP The home brewing stainless steel diffusion stone inline oxygenation aeration kit has excellent workmanship, stable performance, safety and reliability, good sealing and waterproof performance. A PERFECT HOME BREWED BEER ACCESSORY - The oxygenation diffuser for beer brewing of the kettle pump is a perfect home brew beer accessory, this set can help you brew authentic beer.