Upright heads-up phone holder for wheelchairs using the Wheelchair Mate attachment rails. Rubber-band used to create tension. Other files more mounts/rails and instructions can be found here:
https://www.printables.com/@WheelchairMat_962869/collections/704626
(and here)
https://www.printables.com/model/509930-wheelchair-mate-universal-mount
Happy Printing!
The author marked this model as their own original creation.