The Buy One, Get One FREE – Replacement Elbow For Fisher & Paykel Eson 2 Nasal CPAP Mask is designed for Eson 2 Nasal CPAP Mask, allowing easy connection from CPAP Machine’s Tubing to the CPAP mask’s frame to ensure a secure fit with this original, high-quality part. The Eson 2 diffusers for the elbow are sold separately. In the box: (2) Elbows
