Ordered a pack of 5 of these replacement glass pieces on May 1st, delivered May 14th to South Florida, USA. All 5 glass tubes arrived intact in a soft styrofoam-like block of packing, and all 5 fit my non-EU version Smok TFV8 Baby (3ml) tank perfectly with the RBA head installed. Not too tight, not too loose. The glass is roughly the same thickness as well and seems to be as sturdy as the parts that came with the RBA head originally. I'm satisfied and would recommend vapingbest.com to my friends.