Fangrui Product Details 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