The file '10mm Plastic Insert (35mmx22.2×22.2) 3D Printer Model' is (stl) file type, size is 13.9KB.
This is a 3D printed core I made to encase a 10mm fastener. You can use a 7/8" drill bit to instantly create a 10mm insert for a variety of applications. I use these to make custom shift knobs.