This is the rose gold in 6mm. Its a little small, if I had gone to the 5mm I think it wouldve been too snug. It spins when i move it, not freely but thats okay itll prob spin easier once its less swollen. Its nice that it has a hinge and that it makes a click noise together- making you sure its clasped. The end of the hoop that just kind of guides into the other end of the hole is super obnoxious. This is my second hoop ordered and will definitely order more in the future!!