Review on Cal Hawk AZGA125 Grommet Assortment Electrical: Complete your Electrical Projects with Versatile Grommets! by John Bennett

The main reason I bought these is because they have closed and open lugs. The rubber itself is nice and pliable so it's easy to put on. They even stretch well so you can stretch them to get bigger plug ends. Fully sealed grommets are great for small gaps when routing a wire or two. Others are good at running the entire cord through the hole. This is necessary to protect the wires from the sharp metal hole they pass through. Would definitely buy again.