Diffuser U-tube Check Valve Set Carbon Dioxide Detector Glass Refiner $ 5.27 Product Information: Material: glass + plastic Specifications: Glass refiner1, worry-free suction cup1, check valve1, glass u-shaped tube1 color: White Product category: co2 detector Package Plastic diffuser 1 Glass refiner1, worry-free suction cup1, check valve1, glass u-tube*1
