2PCS Elbow Compatible with DW Elbow, Replacement Elbow/Swivel Compatible with DW Elbows

Works like supposed to

Not sure how to review these. Purchased for my cpap and they work for intended purpose. No issues with function.

Good quality fast shipping

Perfect replacement, fast shipping

These work, but they do not swivel smoothly at all. They also make a significant whooshing sound where air is released.. and I mean a LOT of noise. Might be worth getting the genuine Respironics one since it isn't something that needs to be replaced frequently.