This is for a 5-Pack of 3/4 inch wide X 8" inches long, EPDM rubber bands. The wall is .063. This will hold your Mason Bee Blocks together! This is a custom made rubber band that many people have requested. So, here it is!  We also have one that is 1" wide in our store. You all asked for it, and here it is! This is not sold at your local hardware store. LOL