Marineland (Aquaria)AMLPR10075 Bio Wheel Bearings New Penguin Filter Parts for Aquarium

Excellent quality.

Worked :)

I had no idea that it was recommended to replace these bearings once a year. It had reached the point where my biowheels just would hardly turn at all. I bought these and replaced my existing bearings and my biowheel is now spinning happily away(Not sure you need to replace annually, however, the bearings I replaced were several years old before they gave up. Maybe replace every couple years?)

I needed to replace my bio filter wheel holders since one had been worn down and broken. These were the only ones I could find that matched the size of my filter perfectly. They longer manufacturer the filter so I have to hunt for parts. This was truly a perfect fit!

Didn't work with my 275 marineland filters pump it's too big won't fit in the groves

I'd have replaced these 3 time by now if I had known they existed. And yes, bio wheels do work as long as they turn.

Replacing these make all the difference in the world. The bio wheels turn very easily. Easy to install.

My old clips finally wore out after over 30 years and these are great for the wheel