For oxygenating wort or for purging wine with nitrogen or argon. 26" long 3/8" OD stainless tubing with .5 micron sintered stainless steel stone attached. Attach 3/8" ID tubing (D1706). Look at KEG593 if you wish to use an areation pump to inject oxygen (2 micron stone has less restriction.)Sanitizing your Diffusion Stone:To properly sanitize your stones, we recommend you run it in a sanitized solution for 5 minutes. If the stone becomes clogged we recommend boiling the stone for 1-3 minutes to help break down anything within it. If boiling is not an option, for whatever reason, we recommend the next best, soaking in Star San. Star San will remove a majority of surface contamination/bacteria.Please note that you do not want to touch the stainless stone portion with your hands. The oils on your fingers can actually clog the small pores in the stone.Overall Length 26 7/8" OD of wand 3/8" OD of stone 1/2"