Perixx 34mm replacement trackball. It's a glossy, speed-type trackball in purple. I bought it new, but I'm selling it at a low price because I purchased a different color. I've attached images of it installed on a Logitech MX Ergo s for reference. This is a trackball-only sale. The mouse is not included. Although it's new and unused, I did open the package and install it in a mouse, so please understand. Thank you.