Features: Designed to cover numeric portion of the keyboard Ideal for those who seldom use the numeric keypad This Optical Mouse Bridge is designed to work with an Optical Mouse Dimensions: 7 1/2" wide x 8 1/2" deep Color: black split Mouse Bridge covers the numeric keypad portion of the keyboard to bring the mouse more in line with the body. No more reaching for the mouse. Ideal for all mousing pplications, especially with infrequent numeric keypad use. Instructions for use:Place the standard mouse bridge over the numeric keypad without any adjustments. The highest side should be behind the keyboard with the "cut-out" on the bottom left.