
.
From a typical Classic Car Spares place, approaching £2 each, or currently £4.50 for a set of 6 on Fleabay.
But look in your local hardware store for Blind or Closed, Cable Grommet 25mm, the things that electricians used to close off holes in cable boxes.
I brought a pack of 10 from Wickes last year for around £2, although I don't see them on their website at present.
Screwfix are currently doing a pack of 50 for £2.59!!
