Sorry, they do not. The grommets are sold separately.
R312 for 1/2" sticks and R313 for 3/4" sticks. (please see the links below)
https://www.rrproducts.com/rubber-grommet-1-2-set-25-r312.html
https://www.rrproducts.com/rubber-grommet-3-4-set-25-r313...
