TH-03 ABS Solar Vacuum Tube Holder 47, 58, 70mm for Solar Water Heater We supply three kinds of vacuum tube holders according to their different materials:1. ABS vacuumtube holder, including flower type vacuum tube holder2. Reinforced nylon (GFPA) tube holder, most of theim are adjustable vacuum tube holder3. Silicone tube holder, a new typeFeature1) High strength toughness2) Heat, corrosion, Impact and insulation resistance3) Extremely durable and not easy to embrittle4) High-quality finish5) Universal application and reasonable priceSpecification About us