The New RPM 4 Pod By Smok is specifically designed for use with the RPM 4 kit and is not compatible with any other device. Made from high-grade food-safe plastic the pod supports a duck-billed mouthpiece for comfort while vaping as well as a transparent oil window to show the remaining volume of e-juice. The RPM 4 Replacement Pod comes in two variations one which holds the new LP 2 coils and the other utilizes the classic RPM coils to offer a versatile selection of coils to suit your vaping needs.