Tilt Stand for M575S - Set of 2 - 35° This is a set of tilt stands for the Logitech ERGO M575S trackball mouse. I'm selling these because I switched to a silent white version. Please note that the mouse itself is not included. This is an auction for the stand parts only. The base is 15°. The additional part is 20°. Using both gives you 35°. It was perfect for trying out various angles by combining them. For disassembly and portability, the parts are separate, and it doesn't get thick, which is good, but it rattled a bit during use, so I put a hundred-yen store acrylic adhesive sheet, a "frog gel" (like a gel pad), in between, and it settled down nicely. If you have the opportunity, please consider it.