3mm Diameter 30 Metres of Silicone Vacuum Tubing

3mm Diameter 30 Metres of Silicone Vacuum Tubing Technical Details 3mm and 4mm diameter have a wall thickness of 2mm. 5mm diameter has a wall thickness of 2.5mm. 6mm and 8mm diameter have a wall thickness of 3mm. Manufactured from the finest high tear strength 65Shore hardness silicone polymer. Manufactured under the ISO 9001 quality system.