This is the only one I will use as I have tried other 'brands', but none came close to it. The build quality, tolerances, etc. are nicely done.
https://www.amazon.com/Thunder-Group-Cup-Flour-Sifter/dp/B001PZ9GU4
Been using this exact one since starting home roasting... 1st one lasted about 550 batches (at least 240 lbs.) before I finally wore it out and I bought the same exact thing, modified it exactly the way I had the 1st one and back in business. It's stainless and very heavy duty to handle the heat/friction.
https://www.amazon.com/Thunder-Group-Cup-Flour-Sifter/dp/B001PZ9GU4