This is a Quilting Binding Tool, the text in the middle can be customized in bambu studio by double clicking the text and editing it via the text editing tool.

The center slots have been chamfered/filleted so material doesn't catch on the edges, includes a hole to hang on a peg board or hook, hole diameter is 10mm before print.

Ironing settings are included, they worked well for my H2D using PETG but may require some tweaking to better match your printers capabilities.  The print does not require any supports.

Edit: Included print profiles for 5% and 10% infill.