Ruby ball replacement set compatible with the IST Trackball (IT10 and IT11).

• REPLACEMENT BEARINGS - Replacement ruby ball bearing exclusively for trackball IST series.
• PLEASE NOTE- The compatible products are M-IT10 series and M-IT11 series of the trackball mouse IST series. (As of November 2023)
• EASY SWITCHOVER - Easy to replace and refit with the included removal tool.
• CONTENTS - Artificial ruby unit x 3 pieces, removal tool x 1 pieces
• Dimesion - Width 0.3 inch x Length 0.27 inch x Height 0.15 inch, Weight : 0.03oz