The X1 RDA by Vaperz Cloud is a 24mm four post atty with adjustable bottom airflow design allowing you to fine tune your airflow.
Post holes are 2.5mm.
Stainless Steel or Copper Construction
Rectangular Dual Positive Post
2.5mm Post Holes
Milled Negative Posts
Adjustable Bottom Airflow
Deep Juice Well
Wide Bore DelrinDrip Tip/ Chuff Cap