The pen is processed properly, easily and work on a Samsung Galaxy Pro 12 inch exactly as good as the Samsung-supplied stylus. The Lenovo is longer and thicker - about like a slender pen - and fits comfortably in your hand.
What bothers me is the lack of spare tips. While Samsung's pins attaches a selection of (replacement) tips and a clamp to pull the tip, I have received only the pure pen. If the point is dull, I have to see where I get replacement.