The file 'Grommet For Sparlight Mast, Westerly Centaur 3D Printer Model' is (stl) file type, size is 9.7KB.
My sailboat, a 1969 Westerly Centaur with a Sparlight mast, had some grommets for the mast wiring that were in horrible condition. One was intact enough for me to take measurements, leading to this grommet.