High-Quality White Rubber Vacuum Tube Lab Hose Pipe. Whether you are conducting routine tests or advanced research, these hoses provide the dependable solution your lab needs. 2mm x 4mm，3mm x 5mm，4mm x 6mm，5mm x 7mm，5mm x 8mm，5mm x 10mm，6mm x 9mm，6mm x 11mm，8mm x 11mm，8mm x 12mm，8mm x 15mm，10mm x 14mm，10mm x 20mm，12mm x 22mm，13mm x 17mm，16mm x 21mm，19mm x 25mm，25mm x 32mm，6mm x 21mm，8mm x 25mm，10mm x 27mm，12mm x 28mm，14mm x 34mm.
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