They work best with the cup holes with the rubber rim around it. If you have a plastic rim, it will cover the hole but will not “stick” in the hole.
Now you can play with or without holes. Also, once you remove a made cup you can cover the hole to prevent a thrown ball from going through it.
Top diameter – 3 3/8 inch
Bottom insert diameter – 2 3/4 inch
Lip/Overhang – 1/4 inch
