Borosilicate glass tube 25 cm long ,for use in butane-extractions, with a shoulder next to the gas inlet flange with 7 mm approximately for handle it, 31mm inner diameter, 38mm outer diameter and a shoulder at the outlet with 46mm of diameter.

Its use is simple, fill with vegetable material to extraction desired, cover the last part with a coffee filter or similar, and then enter the gas through the hole having the upper conical part. Extreme caution, the glass surface becomes extremely cold during use, may cause burns.