Works Great for either purpose ! Just Clip in a Cleaning Cloth or paper towel and clean those hard to reach areas inside Oil Lamp Chimneys, or Bottles. Steel Wire Ca. 1900.
Medium size 14 1/2 inch Wire Formed "Chimney Sweep" or "Bottle Whisk" with sliding tension loop.
I use a couple different size Chimney Sweeps every week when cleaning newly found Oil Lamp Chimneys, but this is the handiest size of them all.
Seen cleaning the inside of a large number 2 size chimney.