The file '12mm Insert (25mmx25.4mmx25.4mm) 3D Printer Model' is (stl) file type, size is 7.3KB.
A 12mm Threaded insert for a variety of applications. 12mmx1.25 is a common thread for universal shifter adapters. The OD of this core is 1" to be drilled with a forstner bit.
Only tested so far with PLA