This is an angle adjustment stand exclusively for the Logicool ERGO M575 and M575SP. * It is secured at two points: the battery cover and the ball's recessed area. * By tilting it more than the standard angle, it allows for work at a natural hand angle. * The receiver can be stored inside or on the back, depending on how you use it. * You can turn the power on and off without removing the stand. * It has a smooth and simple design that matches the shape of the M575. Made in Japan ※ Please note that this product is manufactured with a 3D printer and may have surface irregularities such as layering unevenness, stringing, and color unevenness (heat resistance up to 50°C). ※ The M575 body, receiver, and battery cover are not included.