2 set household :1 x Oxygenation Diffusion Stone & 5 x Beer cleaning toolsUse these small brushes to clean tough stuck on grime in your beer faucetAlso works great to clean homebrew 3 piece airlocksTwisted metal handle will stay firm during the most vigorous cleaning sessions.Eye hook allows compatible with convient drying and storage on a hook or string QUALITY -- high temperature resistant and durableNO BLOCKING -- Millions of tiny pores make it can carbonation beer and soda prior to fermentation quickly,the Micrometre stone is perfect to compatible withce carbonate your kegged beer or as an aeration stone prior to fermentation.Not easy to get clogged as long as it's ungreasyA MUST HAVE -- A must have compatible with Homebrewers who Carbonate in Kegs Made of stainless steel 316, better than stainless 304. Perfect compatible with carbonation of Beer or Soda.EASY TO USE--Just connect your oxygen regulator or aeration pump to the stainless steel diffusion stone and aerate your wort as beer flows through the line. Connects inline with any kettle, pump, or counterflow/plate wort chiller2 Micrometre Single Oxygenation stone1/2 inch NPT Male Fitting1/4 inch Barb attachment compatible with oxygen regulator or air pump connectioncolour:Silver + WhiteMaterial:metal + Nylonsize:5cm + 20cm longPackage Contents:1 x Oxygenation Diffusion Stone5 x Beer cleaning toolsOnly the above package content, other are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.