I used these in color blocks both four sided and six sided as well as in an R8 to ER 40 call it adapter for my milling machine at Wheat State welding LLC in Derby Kansas. The total indicated run out is very acceptable. These are packed in individual tooling containers the normal plastic time, and each color to shrink wrapped and covered with some kind of oil. The worst thing I can say about these is it took me about 10 minutes to unpack all 29 of them. Otherwise these are an awesome color set and I highly recommend to anybody that needs one at a decent price. These do not come with any kind of case or wooden box. You're on your own for that.
Ham Radio Guy 
