Replacement Select-A-Vents are a quick and easy way to control low-frequency amplification when using custom earmolds. Each SAV tree contains one of each vent size: #1 - 3.0mm (.125"), #2 - 2.8mm (.110"), #3 - 2.0mm (.080"), #4 - 1.2mm (.050"), #5 - .65mm (.025") and #6 (solid plug).
