【Product Overview】 This is a push stick that allows you to easily remove the trackball. Simply changing the mouse angle from 20 degrees to 0 degrees makes it easy to remove the ball. A neodymium magnet is built into the bottom for stable positioning and light holding force. Convenient for regular cleaning and ball replacement. 【Features】 ・Ejection completed with easy operation of 20°→0° ・Built-in neodymium magnet for stable positioning ・R-processed tip + TPU material is gentle on the ball ・Matte black color blends in easily 【Compatible Models】 Logitech MX ERGO ※This product is not a Logitech product, but a compatible product. 【Notes】 ・Keep out of reach of small children and pets due to small parts. ・Due to 3D printing, some layer lines may be visible.