This is a mounting bracket for the RAM-B-102-UN10U found here: https://amzn.to/4aFCtgC
It is laser cut 10ga polished stainless steel. This bolts on top of the window latch in your CAT 299 skidsteer/CTL. All factory hardware is used.
 
This positions your phone in your general line of sight of operation with easy access to permit 1-handed phone operation, as well as retaining access to your window latch, key, and Park release & windshield wiper.