They operate at one speed... slow. I have been using them as a source since 2013. And, unless you pay expedite fee, you will have to wait longer than any other supplier. If it is something they have on the shelf why wouldn't it ship out the same day? Hit and miss on weather the part you order actually works. I have had problems more than once with ordering, excessive wait times and getting parts shipped to me that are broken. Like I said, last ditch effort. They have, in the past, provided obsolete parts that I could not locate anywhere else. But usually if I am looking for parts at radwell, the machine I am working on is heading for the boneyard anyway.