George Risk Industries GRI PW75WH Gri Pw-75W Prewire Plugs,

These are a great way to put a wire in a location, to use for a much later date. The cap is very flush to the surface and snaps in tight, so be careful when removing it.Watch the price you are paying. Some 3rd party sellers are charging a huge price for just 1 plug. Not a bag of them. They come in a bag of 100 from the manufacture and are usually about $1.50 - $1.75 ea. If buying individual quantity, the price will be more but shouldn't be 3x the price.