The Advance termite bait station lid (or cap) is made of hard black plastic and covers the top of the termite in-ground bait station. This is only a replacement part in the event that a cap on one of your stations has cracked or is broken. Note: The caps can be opened more easily when you use the Spider Station Access Tool (sold separately).
I bought this as a replacement for my bait station at home. The product didn't mention the dimensions of the cap. When I received it, I saw that it was too small. Since I had already opened it, I noticed that it said you couldn't return an opened product. Very disappointed.