Sanitary Sintered Stainless Steel Carbonation Stone, Oxygenation Stone for Carbonation Stone; Usage: Filter; TC size: 1.5"; Carbon Stem Length: 4", 6"

Sanitary Sintered Stainless Steel Carbonation Stone, Oxygenation Stone for ... Carbonation Stone; Usage: Filter; TC size: 1.5"; Carbon Stem Length: 4", 6" 

/2" Tri Clamp Carbonation Stone with 1.5" TC - Carbonation Stone for brewing - Carbonation Stone for beer

1/2" Tri Clamp Carbonation Stone with 1.5" TC - Carbonation Stone for brewing - Carbonation Stone for beer tainless - Oxygenation Stone - 1.5" Tri Clamp

Carbonation Stone , Tri Clamp 1.5 in. x 12 in. w/ 1/4 in. NPT - SS316
1-½'' tri-clamp connections to tank
¼'' female NPT gas connection
¼'' NPT fitting Female
¾''x 4" 6" 8: 10" 12'' 20mm Diffusing Stone
2 micron Porosity
SS316

 http://www.porousfilter.com/index.php/product/index/id/181.html