Strong durable stable suction cup; 4Ultra-strong suction cups, Even if you suction cup bird feeder window There are many birds feeding at the same time, and they can stay still. Strong and durableBird Feeder Window Replacement Suction Cups; suction cup for bird window feeder, this suction cup replacement is easy to attach and remove,Can adhere to any smooth surfaceWhat's In The Package; 5 Pcs suction cup for bird feeder.Warm Tip; Clean the surface with rubbing alcohol before use, Soak in warm water for a few minutes, then moisten for better results.Quality Assurance; bird feeder window suction cup of crayBG has been strictly tested, If you encounter quality problems in use, we are happy to provide you with a 100% refund without any hassle or problems, thank you for your trust and support.