The Tripod (A) or the Tripod with a Brass Ring (B),
supports the Glass Shade on the lamp.
C. shows the way they fit on the lamp.
D. is a picture of a lamp including the Tripod with Ring and a lamp shade.
It is easy to remove the chimney and unscrew the chimney support. Then place the tripod or tripod with ring around the burner, replace the chimney support and chimney.
Now you can install your new shade.
The Price for the Tripod (A) is $9.99,
the Price of the Tripod with Ring is $35.99.