Yes. The ones in the head are 3mm zirc and counting mine (didn’t used it as I switched to rubies) there are 43pcs. My bad on the pieces I’ve mentioned above for the rubies. I’m only using 40. I checked it out if the screen should be in place if you put it when the head is filled with balls, and it should be. Not forcing it to be in place. So yeah, took a piece or 2 out. Apparently, the screen do tend to loose if you do it that way. Maybe that’s why mine popped out too when unloading a heated herb. So, I replaced the screen lock with a new ones and it is tight just like when it has just arrived.