THIS FITS ROUND HOLES IN THE FRAME OR HEADLIGHT BUCKETS THAT ARE APPROX. 30MM ID. THE ID OF THE GROMET IS THEN 25MM ID. I WOULD USE A TINY BIT OF 3M WEATHER STRIPPING GLUE TOO. PICTURED IS A CT90/CT110 BUCKET @ **GROMMET REAR OF HEADLIGHT_BUCKET FITS_IN_30MM_ID 61302-268-020 7/20M (269R) 269R