Kitchenette -0.5 And 2 Micron Oxygen Diffusion Stone For Home Brewing 0.5 Micron Highlights generic brand 0.5 And 2 Micron Oxygen Diffusion Stone For Home Brewing 0 .5 Micron Description: Made of high quality stainless steel, nickel plated, compressive strength, corrosion resistance, high performance and high reliability. The 0.5 micron and 2 micron (1/4 barb) inline diffusion stone has millions of tiny pores, so this diffusion stone quickly oxygenates wort and carbonated beer/soda before fermentation. This diffusion stone can also be attached to the end of your 'gas inlet' on your keg with 50cm of tubing to quickly accelerate carbonation. The diffusion stone can connect with kettle and pump and wort chiller by hose. Perfect for brewing beer/seltzer water. Specification: Material: Stainless Steel Size: 48x12x7mm/1.89x0.47x0.28inch Package Include: 1 Piece Micron Diffusion Stone 1 Piece 0.5m Length Hose Note: Please allow slight dimension difference due to different measurement manual.