Most of them. I bought a couple On-Stage like this

http://www.amazon.com/Stage-Foam-Ball-Type-Windscreen-Black/dp/B0002GXF8Q/

Then I bought a cheap set of colored foam screens.

http://www.amazon.com/gp/product/B007E69TPA/

These are a little thinner but cheap and cheery.

The maximum midline ring diameter on the ATR2100 is 51.2mm per my calipers and the ATR to my right.

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