This is a great beater head, and is the beater head of my choice, as it feels great to play with, gives a good response from my pedal and a nice sound from the bass drum. I have never had any trouble with the connection of this beater head, it fits to my iron cobra pedal as it should and has never fallen out of place.
The only trouble i have found with this beater head, is only to be expected, but I am now finding myself having to replace the head only after a short amount of time, as the felt wares away sometimes leaving sharp bits of glue that then can damage the bass drum head, if it is not changed in time.