This is a two-piece phone cradle designed to attach to RAM brand mounting hardware. I bought a custom-fit cradle for my previous phone as well as windshield and handlebar mounts. This design comprises a pair of clips that can be bolted to a spare twist-lock mounting plate to use a new device with existing mounts. Version Variations I printed a couple iterations of the design to test different options. Some of the pictures show these different versions. The final version has no side grips and sandwiches the horizontal clip securely between the vertical clip and the mounting plate. Possible Improvements For me, this design does the job as-is. However, some features are not yet truly customizable. Here are starting points to tackle if you want to make a remix: I printed my copies (including several test versions) in brown PLA on my Printrbot Simple with 0.3 mm layer height, 2 perimeters, 3 top/bottom layers, and 0.2 honeycomb infill.