Gas tank fullness indicator magnet

- Easy to place on a metal gas cylinder, with magnetic attachment
- No more surprises due to the gas cylinder suddenly running out
- Note: The gas level indicator only shows the gas cylinder level when using gas. After lighting a gas appliance (e.g. a gas grill), it takes a few minutes before the gas level indicator becomes visible.
- For use with standard metal gas cylinders filled with propane or butane (including grill gas)