Usage Tips:2 Pack Propane Tank Gauge: No longer worry about not knowing how much propane is left in the tank, the Propane Tank Gauge is equipped with a high-precision three-level indicator panel, so you can monitor the amount of propane without removing or lifting the Propane Tank. universal interface: Propane Tank Gauge with Universal Type 1 Connection for 5-40lb Propane Tank, Great for using Cylinder, Heater, lantern, smoker, RV Camper, camp stove, BBQ Gas Grill fire pit table and More propane Appliances. High quality: heavy-duty solid brass structure, scratch and corrosion resistance and sufficient heat resistance, can perfectly provide a sealed connection between the oven, the caravan and the storage tank, very strong and durable. Easy to install: equipped with a dust cover, no tools are required, just connect the Propane Tank Gauge to your standard propane tank to use. The color Gas Pressure Meter allows you to see at a glance when the propane level is low. colour: as shown Material: metal + plastic With North American interface Recommended for North America Package Contents: 2 x Propane Tank Gauge Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.