【Many sales!】 We have restarted sales of the 25mm trackball in black. This is a 25mm diameter trackball. POM, which has a proven track record with key switches, is used for the material, and its self-lubricating properties allow it to maintain smooth operability for a long time without special maintenance. In addition, a special process is applied to the surface to evenly apply fine polishing, achieving single-color operation without malfunctions while maintaining smoothness. If you have any questions, please feel free to comment! #keyball39 #keyball44 #keyball61 #keyboard #trackball #DIYkeyboard #25mm #keyball