Durable brass construction: Solid brass body resists corrosion and rust from weather and outdoor use, giving long-lasting ruggedness for repeated refills. Upgraded QCC1 connector with locking mechanism: The elbow adapter uses an improved QCC1 design that is easy to connect and disconnect. The unique locking mechanism helps reduce the possibility of leakage compared with conventional connectors. Designed for 1 lb. propane tanks: Converts standard 1-pound disposable or refillable propane cylinders for use when refilling is needed. The elbow shape allows compact, secure connections in tight spaces. Three-color coded fuel indicator: Built-in three-color coding provides a quick visual cue of remaining propane levels so you can plan refills and avoid interruptions during use. Portable and user-friendly: Compact, lightweight design fits travel and outdoor gear. Simple to install and remove for campsite, backyard, or event use. Practical performance: Combines reliable sealing, straightforward operation, and durable materials to make refilling safer and more convenient. Common applications Camping stoves and portable grills: Refill and use 1 lb. tanks at campsites without swapping multiple cylinders. Backyard barbecues and open-air parties: Keep small tanks topped off for side burners, portable grills, and outdoor cooking stations. Outdoor lighting and heaters: Maintain consistent fuel supply for lanterns, patio heaters, or other 1 lb. tank-powered devices. What you get A brass propane refill elbow adapter compatible with 1 lb. propane tanks, featuring an upgraded QCC1 connection, locking mechanism, and three-color coded fuel indicator for easy, reliable refills.