Bosmere Kompostbelüfter, 91,4 cm

I wasted my money

Don't bother. The design looks great. I get that. I thought the same thing. But it simply doesn't work. The flanges are held on by wing nuts. If you tighten them too much, the flanges are stuck in position, and you can't penetrate the compost pile. If you loosen them too much, not only do the wings eventually fall off in the compost, but the flanges STILL don't work correctly. They are supposed to fold up when you penetrate the compost, and then deploy when you pull it out to mix the compost. That doesn't happen. I'd return it if it wasn't covered in compost. Go with a product with a simpler design.