Ok I was going to ask if anyone knew any recommended RBAs for my Maraxus clone mod, I already am looking at the lotus clone rda so I only need an rba. When I spoke to a customer service agent they mentioned that it used a 510 connection screw. The rda is for when I feel like chilling and chasing clouds at my house or something and the RBA for when im on the go in a car and cant afford to be dripping and driving at the same time.