Sean from NYThese are great import holders. I was skeptical due to the low price but pleasantly surprised that these are actually pretty great holders. I have used them for drilling, tapping, and end milling and they were good for all three. The nuts are a little "sticky" at first but they work in after a short time and work just fine as well. For smaller shops like mine this tool holder set is great due to the low cost. The local places want over 100.00 for one tool holder!!