Somehow I must have missmeadured the diameter of the hole in the bass drum, because it does not fit for 1 or 2mm. Anyway, construction seams solid, perhaps the tubes would have been a bit nicer with plastic or rubber tops at the end, but other than that I think that it is a great value for the price. Can't say much more, because I could not install it on my drum and use it, it is just an unboxing impression.