Compatible with all QCC1/Type 1 connection devices and fits 5-40 lb propane tanks (not for over 40 lb tanks). Heavy-duty solid brass construction resists weather, scratches, dents and corrosion for long-lasting use. This gauge provides estimated readings (not exact) for tank levels. Note: Temperature affects pressure - higher in hot weather, lower in cold - so same propane amount may show different levels. Conveniently monitor usage and schedule refills for any season. Monitor fuel level without removing the tank. Color-coded dial lets you see low levels at a glance, no guesswork for refills. Works with propane cylinders, regulators with hoses, and adapters. Instantly checks tank pressure - displays when you turn on propane. Comes with a dust cover. Tool-free installation - just hand-tighten. Ideal for gas grills, heaters, smokers, camping stoves, lanterns, tabletop grills, fire pit tables, turkey skillets and other propane appliances. Color: As shown；Material: Plastic + Metal Package Includes: 1 x Propane Tank Gauge, 1 x Mining Nozzle (other products not included). Note: Light reflection and display differences may cause slight color variations from the real item. Measurement error: +/- 1-3cm.