The "size" (4mm, 5mm, etc) represents the diameter of the hole. You will want to select a hole size that is larger than the item you plan to place through that hole. 5mm and 7mm are our most popular sizes. Click here for grommet sizing info, including a true-to-life size chart you can download and print for visual reference.
Optional: Leave a note in the Order Notes box at checkout requesting that your order be reviewed for completeness. We'll contact you if anything appears to be missing or if your tools aren't compatible with your fasteners.
Something to cut a hole through your fabric for grommet placement:
Hole punching dies. If your material has no stretch, use hole punch dies in the same size as your grommets. If your material is stretchy, use a smaller hole punch size since the hole will get stretched out.
Place grommet dies in press.
Make a hole in fabric big enough for the grommet stem to slip through.
If using pro-handheld or pro-standup press:
Place eyelet through hole.
Place flat washer over eyelet stem.
Center grommet in dies, making sure the hole sits over the nub of the bottom die.