Aspects Replacement Window Suction Cups

Despite what places and people tell you, the fact is - you can't get these type of suction cups which go on the bird seed feeders any other way than through this place. I don't know why but apparently these type of suction cups that go on the back of feeders (with hole through the center for screw) are just not sold any place else. I wish they were but they're not. And if people tell you you can get them at a good hardware store, they are not understanding exactly the type of suction cup you need. The ones at hardware stores (regardless of how complete the store is) never have the hole drilled through the center of the cup. So you have to get them here (at time of this writing, I found them nowhere else on the web either).