I recently had to switch from Fresenius PD to Baxter. With my Fresenius extension the PD belt seemed to work OK. With the Baxter extension, I was not happy. This product is wonderful!
I did read in some of the reviews that people found it difficult to remove the extension from the holder. I had a similar experience, so I was thinking of drilling a hole in the back so that I could push it out of the holder. Then I realized that if you put the cap in the holder so that you can grip the two flat sides, it works perfectly. Just hold the holder in the middle, grip the two flat sides of the cap with your thumb and forefinger and pull it right out. Very easy that way. However, if it’s slightly rotated and those flat surfaces are not available, it is more difficult. If that is the case, you can rotate it in the holder until those flat surfaces are accessible.