Hako Royal is a collaboration between Input's Hako and NovelKey's Royal switches.
The switches contain the stem, spring, and top housing from the Hako switches, and the thicker leaf that is found in the Royal switches.
The combination results an a very tactile switch. The Hako stems with the Royal leaf creates a very smooth and more rounded bump versus the sharp tactile bump that is found in the Royals.
Please note that Kaihua is switching over to an updated housing design. This is only cosmetic. The bottom of the housing will be solid, instead of having a hole.