iKey is the authorized United States distributor for Cursor Controls, the leader in designing and manufacturing robust pointing device solutions for medical, military and commercial screen-based applications. These trackball products are developed for use in the harshest environments where precise cursor control is essential. The F60 Series is the trackball of choice for high-end military projects, including artillary hunting equipment and other radar modules. The ball is 63 mm and has been tested to MIL-STD-461 E specifications.