This is the second one of these I have purchased. The first I purchased about the years ago when the COVID-19 pandemic first took the world by storm. That chuck only had a RUNOUT of 0.012, but a quick turning job got it qualified for high precision. This chick came packaged better, cleaner and looks like they spent more time building it to be the best it can be. I am very pleased especially with the price for such close tolerances. I was honestly expecting to get one that had more RUNOUT than the first one, but it seems like the company has stepped up and making more quality products.