The IJOY RDTA 5S is the sixth generation model in the RDTA line & implements an innovative Central Fill design, two post gold-plated build deck, dual adjustable airflow system, & a push & lock body section which protects the glass & makes wicking easier. To fill the RDTA 5S simply remove the top cap & fill liquid down or go straight through the wide bore ultem drip tip without remove the top cap. The bottom & side airflow system can be used independently or in conjunction with the bottom airflow for maximum air intake. Innovative airflow, & ease of building, the IJOY RDTA 5S is an excellent option for users looking for a high performance atomizer. Compact size for ultimate taste Innovative Central Top Fill Dual Adjustable Airflow Ultem Wide bore Drip Tip Gold Plated building deck Great flavor & vapor production Brand: IJOY Model RDTA 5S Capacity 2.6ml Diameter 24mm Size 47 x 24mm Weight 60g