This is an educational review and build tutorial of the Gear RTA by OFRF. I received it free of charge for the purpose of this review from http://www.ofrf.com Specifications: 24mm in diameter 2.3ml Straight Glass 3.5ml Glass Bubble tank 304 Stainless Steel Single Coil Build Deck Fully Adjustable Airflow German PEEK Insulator Clockwise or Counterclockwise Coil Placement https://mfvape.co.uk