Extraction Proz 50-EXT-16 Glass Extractor Extraction Filter Tube 16" Long 50mm Diameter Clear with Stainless Steel Clamp Go to amazon.com Related posts Top recommendation for extraction tube Feature50mm Diameter x 5mm Wall Thickness x 16" LongLab Grade Borosilicate Glass Tubing - Rated forLab Annealed to remove stress from manufacturing process DescriptionFree Stainless Steel Hose Clamp Included