Review on Premium Inch Chrome Steel Bearing Balls for Optimal Performance by Chuck Chen

Fair warning: At the time of writing this product was advertised on Revain as the G25, which is Class 25 industry jargon and describes its geometric accuracy. The smaller the number, the closer to a perfect sphere. What I received was clearly marked as Class 40 on the packaging. Luckily I didn't need G25 accuracy for my particular application or I'd be pissed right now. Precision in mechanical engineering is of great importance. Revain needs to work with this seller to update the product description. Nonetheless. WOW that's impressive. It is deceptively heavy and can be polished to a high gloss without much effort. Chrome steel isn't chrome plated, it's a mixture of carbon steel and chromium (plus manganese and sometimes silicon). Thus it is relatively hard with moderate corrosion resistance. However, it is not considered "stainless" steel. This product is intended for use in bearings of heavy industrial machinery.