screws or slide casing?

[Az]

Hey, I was just wondering if whether the RAV'N photons have the screw case like the photon II's or a slide case like the photon 3's. I was reading the other message board, and one guy with photon 3's said he was spinning them and they hit together and the pieces went flying everywhere. I was wondering if the RAV'N photons are slide or screw, cuz I hit them together sometimes, and if I hit them together and broke in like the middle of a show, wouldn't that suck? haha.