Check the listing for details. Stainless 2" Tri-Clamp Extension Tube - 6" long/tall Tower Still Spool Filter. Condition: New. Listed at 19.00 USD. Extension tube with 2" tri-clamp fittings on both ends. 6" in length. Made from 304 stainless steel. Can be used with the Alcoengine copper reflux or pot still by attaching them together with a 2" Tri Clamp. Can also be used with the BrewZilla, Digiboil, Turbo 500 GrainFather, Mash and Boil, Robobrew or anything with hole in the lid by using our weldless bulkhead. Links to related items: Distilling Package Alcoengine Pot Still & Lid for Digiboil BrewZilla Grainfather Anvil Foundry 10.5 Gal + Alcoengine Pot Still Electric Brewing Distilling System AlcoEngine Copper Alembic Distillation Lid - Fits Digiboil, BrewZilla, Robobrew AlcoEngine Copper Pot Still for DigiBoil Keg BrewZilla T500 w/ FREE Water Lines Robobrew, Grainfather Distilling Package Includes Alcoengine Reflux & Still Lid Weld-less 2" Tri Clamp Bulkhead - Fits Robobrew Brewzilla Turbo 500 Digiboil etc DigiBoil Electric Kettle - 35L/9.25G (110v)- Beer Brewing, Distilling All In One