The Logitech G502 LIGHTSPEED Mouse Tuning Weights 2g 4g with Storage Case is a set of replacement weights specifically designed for the Logitech G502 mouse. Made by Logitech, the weights come in 2g and 4g options to customize the mouse for optimal performance. The set includes a storage case for convenient storage when not in use. Perfect for those looking to fine-tune their mouse for improved precision and control during gaming or other intensive tasks.