This replacement stopper for hummingbird feeders measures
approximately 11/16" at the smallest end and 15/16" (about the
diameter of a quarter)at the widest end. 3 1/2" L.
The red tip on this particular type of feeder is usually
off center. The red tip is primarily used to attract the hummingbirds. Since it
is the “vacuum” that is created when filling the feeder full that reduces the
dripping, we have found it is best to delicately “snip” the tip to enlarge and
center it, making the nectar more accessible to the
hummingbirds.