These replacement pods are compatible with the Smok RPM 4 Pod Device and come in a set of three. It has a magnetic connection, bottom silicone fill port, and a 5.0 mL e-juice capacity. The two versions work with either the Smok LP2 or RPM coils. https://www.vapeuniverse.co/products/smok-rpm-4-pods?_pos=1&_sid=80bbd4165&_ss=r&variant=43690131128572