I got some red (small) veloplugs. They are too small for my son's MTB rim, as expected. Now I tried to put them in an Araya CT-19N rim. They absolutely will not go in. Then I tried it on a Mavic MA-2 rim. It goes it but will not stay in due to the slick walls of the eyelet. And I got over 100 of these (got them used).