50 plugs in each order 10 of each size 1/4” 3/8” 1/2” 3/4” 1” These plugs are a few thousandth over sized so they snap through sheet metal or thin plastic up to 18GA steel or 2mm thick if you are using these in a thicker material you will need to secure them with a 3 M panel adhesive or silicone of some sort. The sizes listed are the hole sizes they are meant to fill. Each order Comes with 5 Zip style Baggies containing 10 plugs each size, In a larger bag to keep them separated and allow for easy storage.