Molchanovs Equalisation Trainer 2Whether you need to work on Frenzel basics, or want to improve your mouthfill and reverse packing skills, you can train equalization anywhere with the Molchanovs EQ Trainer 2. A step up on the original EQ Trainer, it's got adjustable airflow, one hand operation, and step by step video instructions. Features: Use with one handPlace the notch on the EQ Trainer between your fingers while pinching your nostril with your thumb. Use your free hand to check