This is a widely versatile size that fits on models from almost every equipment manufacturer.
Bobcat® uses this size on the E-26, E-27, and E-32 for the narrow option as well as the previous generation 331 series. John Deere uses this track size as the narrow option for the John Deere 27-D and Kubota as well on the KX-91-2. Hitachi now uses this size on the new ZX 26U-2 model.
There are wider options as well as a more narrow 250mm option for these models so please specify if you would like a different width option for your machine.