SANWA 34mm/1.34inch Trackball, Replacement Ball for Logitech M575, M570, MX Ergo, Kensington TB450, TB550, Pro Fit Ergo, and Other Compatible Trackball Mouse, Glossy Red + Green, Set of 2

Work with Optical Sensors-This replacement trackball provides excellent optical sensors sensitivity. Comfortable for thumb control and ensures a smooth & agile movement. Specialized in precise pointing, multi-screen work, file works, excel, data processing, and efficiency improvement. ^^ Red Ball Compatibility- This replacement ball is designed for any trackball mouse using a 34mm/ 1.34 inch trackball. Compatible with models like MX Ergo, M570, M575, MX Ergo Plus; SANWA GMATB128BK, GMAWTB129BK, GMABTTB130BK, GMATB167, GMAWTB168, GMABTTB169, GMATB155, GMATB44BKN/RN, GMABTTB1BK;
ELECOM: EX-G Pro(M-XPT1MRXBK), EX-G;
Kensington: TB450, TB550, Pro Fit Ergo (K75326WW), Perixx: PERIPRO-801, Perimice-517 / 717 / 520 / 720, etc. ^^ Green Ball Compatibility- - This replacement ball is designed for most trackball mouse using a 34mm/ 1.34 inch trackball. Compatible with models like MX Ergo, M570, M575, MX Ergo Plus;
Kensington: TB450, TB550, Pro Fit Ergo, etc. ^^ Glossy Green/Red Color- Its surface is painted with a scratch-resistant coating and glossy green/red 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.