Key features

• •【Fit in 44mm Trackball Mouse】- This replacement ball is designed for any trackball mouse using a 44mm/1.73 inch trackball. Compatible with models like SANWA: GMAWBTTB138N, GMATB137; ELECOM: DEFT PRO (M-XPT1MRXBK), DEFT Series(M-DT2URBK); Protoarc EM03, Nulea M511, M505A etc. Note: This ball is Not suitable for Trackman T-RB22 mouse (which uses 43mm/1.69" ball).
• •【Work with Optical Sensor】-This replacement trackball provides excellent optical sensors sensitivity. Comfortable for finger control and ensures a smooth & agile movement. Specialized in precise pointing, multi-screen work, file works, excel, data processing, and efficiency improvement.
• •【How to Remove the Ball】- This SANWA trackball replacement can be easily removed from the mouse bottom using your finger or a pen.
• •【Glossy Black Color】- Its surface is painted with a scratch-resistant coating and glossy black color for more effortless optical identification and smooth movement. Works Temperature: -40℃ to 60℃.
• •【Quick Cleaning Tips】- This mouse ball replacement part is simple to clean. Either use a soft brush or a lint-free fabric. Before replacement, we suggest that you can clean the inside ball hole to avoid possible erratic cursor movement.