Review (3/5): Didn't quite fit.
This does fit but it won't go on all the way. I'm not sure why but it is usable enough for now. It is frustrating. I didn't know if this was returnable after use of course but it is usable enough. I bought these for my son's brush. He doesn't have a problem with it but the fact that it doesn't go all the way down on the metal head bothers me. Anyways, I wouldn't purchase it again personally but it is cheaper than the regular heads so I guess you get what you pay for.