Product Feature ? Durable and Reliable: Our refill adapter is made of solid brass, ensuring it is rust-free and durable for long-term use. The leakage-free valve also provides added safety and security. ? Improved Filling Experience: Our 90-degree elbow design ensures smooth gas flow to your small cylinders, making refilling a breeze. Simply attach to your tank and refill your tanks in no time. ? Enhanced Safety Features: Our upgraded design includes a propane ON-Off control valve to prevent gas leaks during the refilling process. With easy control, you can refill your tanks with peace of mind.The red ball valve switch can easily be controlled by finger which right distance and will not affect installation space. ? Rotatable Three-color Dial Measuring: Propane refill elbow adapter with color-coded dial, you can see at a glance when your propane level is low. Even in dark, detect dangerous leaks and read fuel level at glance by the color-coded dial outside, allows you to quickly and easily check the amount of propane in the tank to avoid any inconvenience caused by insufficient gas.Dial will tell you whether you're in the red (empty), yellow (low) or green (sufficient). ? Wide Application: You can easily connect your 5lb to 40 lb tank cylinders to small 1 lb bottle refill propane gas to meet your camping, BBQ party needs. Fits for heater, camp stove, portable grill, tabletop grill, and more. Great for camping, tailgating, heating needs or having an outdoor cookout. ? Use Advice: 1lb propane refill tank regulator adapter is easy and quick attachment, Connect the coupler to the propane tank. Connect the 1-pound container to the adapter. Take the VAT, turn it upside down, and put it on the picnic table so the liquid can flow out. Install QCC1 to 5-40lb tank cylinders. Note ?? 1. Because the gas is highly flammable, it can only be used outdoor and stay away from flames and sparks. ?? 2. Make sure the valve is closed before refi