I find the fact that the RBA for the TFV8 baby requires a piece of glass that is MILLIMETERS longer than the typical 2mL tube completely ridiculous, but here we are. The RBA/RTA deck itself came with the glass but I don't like being without spares. The place I bought it from doesn't sell the glass separately-- not honestly sure if anyone does-- and I'm having a real time finding out. If worse comes to worst, I will just buy a second RBA for $10 and know I have two plus the backup glass... but I'd prefer not to do that. TIA.