ELECOM Ergonomic Comfort Design Trackball IST Wired USB-A Connection, Smooth Tracking with Ruby Ball Bearing, 36mm Ball, Thumb Control, Compatible for Windows, PC, and Mac White (M-IT10URWH)

| RUBY BALL BEARING MOUNTED TYPE- Ruby ball bearing provides the feelings and smoothness. | | INTERCHANGEABLE BEARINGS - Replaced with ELECOM bearing parts that sold separately. | | ERGONOMIC DESIGN - Supports your hand in a natural angled position 28 degree for all day comfort. | | 36mm SILVER BALL SIZE - Easy to move from one end to the other even on large screens. | | Dimesion - Width 3.8 inch x Length 5.0 inch x Height 2.0 inch, Weight : 6.2oz | | *This product does not include replacement RollMaster bearings. | |