4 inch Diameter Jacketed Spools - Multiple Sizes
[Quality Materials]: The Jacketed Spool is made of high quality 304 stainless steel, which is durable, stable, rust and corrosive resistance and good for long time using.
[Precise Design]: The Jacketed Spools allow the user to circulate water through the base of an extractor or the material column to heat up or chill solvent vapor and attached tri clamp fittings on each end for user convenience
[High Working Temp]: It is suitable for liquid with working at -58°F~392°F
[Convenient organization and storage]: Packed in a carton box with label.