I ordered 255 lbs of the Vulcan rubber encased weight plates and they're awesome! I did a ton of research before buying these and these are practically the best option out there for the quality, accuracy, and price. However, I did have an issue where one of the 10 lb weights was ~11.8 lbs (much greater than the 2% tolerance guarantee) and it was actually noticeable when using it since it was even further off from the other 10 lb weight. I mentioned this to Vulcan and they were very quick to provide a replacement even during this COVID madness when things are out of stock. A++ to customer service! All of the other weights were in fact within 2% of stated tolerance though and almost every single one of the pairs matched in weight right down to 0.1 lbs which is GREAT