Review on YOTOO Cylinder Deglazer Adjustable Diameter by Joseph Flamm

I've used them for decades, mine all died in a fire. Received once and not only has the "flex" shaft broken, but the stones have worn VERY unevenly. I only honed one cylinder before it became completely useless. I will never buy again. Oh, you can't flip this knot either, or it will untie and fly apart. NO I DO NOT RECOMMEND