Thank you for viewing! Please let me know your desired angle (40°, 50°, or 60°) via the transaction message after purchase. 30° is also available on another page. Please refrain from price negotiations. Thank you for your understanding. --- This is an angle adjustment stand specifically for the Logicool MX ERGO and MX ERGO S. It attaches by sandwiching the MX ERGO body and the plate (it incorporates magnets and iron plates, and uses unevenness to increase adhesion). It further tilts the mouse from the standard 20° angle, enabling work at a more natural hand angle. - A stick is included that can be used when removing the ball, and it can be stored by being fixed with a magnet when not in use. - It has a smooth and simple design that matches the shape of the MX ERGO. - The stand will not fall off even if you lift the trackball. - 40° is popular, followed by 50° and then 60°. As the angle increases, the height of the ball also increases, so you may need to adjust the height of your hand with a cushion or similar. Made in Japan Color: Black Materials: Plant-based resin (bioplastic PLA), iron, magnets *Please note that this product is manufactured with a 3D printer, and there may be layering unevenness or stringing on the surface. *Only the angle adjustment stand is included; the MX ERGO body and metal plate are not included. Type: Mouse