Rock one or two cartridges at the same time with the Duet! This is the replacement magnetic base for the Duet, in case something happens to your original. The base has two 510 threads, the IntelliSwitch, and airflow control switches. Select the same color as your Duet, or mix it up to create a custom colorway! 

Misplace the base piece for your Duet? Grab a replacement base and you’ll be good as new. The replacement piece comes in every color of the Duet. Match your original device color, or choose a different one to mix it up and create a unique Duet that only YOU have!