> For the complete documentation index, see [llms.txt](https://docs.revrobotics.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.revrobotics.com/rev-crossover-products/ultraplanetary/ultra-90.md).
# Ultra 90 Degree Gearbox
## Features
With an efficient right-angle configuration, the Ultra 90 Degree Gearbox ([REV-41-2080](https://www.revrobotics.com/rev-41-2080/)) ([VIDEO](https://www.youtube.com/watch?v=a-wnF7VEsus)) offers a robust solution to building a more compact robot. The Ultra 90 Degree Gearbox allows you to connect the UltraPlanetary Gearbox and the HD Hex Motor in a 90-degree orientation for maximum flexibility and ease of use in tight spaces. This versatile gearbox can also be used to transfer power between two 5mm hex shafts that are at a right-angle configuration.
* Mounts directly to the output of the UltraPlanetary Gearbox
* Mounting holes compatible with the REV Motion Pattern
* Affix between pieces of channel in a channel drivetrain for a more compact design
* Through-bore hex on the output allows positioning the gearbox in the middle of a shaft or using a very long shaft without needing to cut it
* Blind socket hex input allows shafts of varying length and also captures the shaft when mounted to the output of an UltraPlanetary Gearbox
* Ball bearings located on the input and output for a smooth performance
