Specifications:Bell is clear and audible, so you can prevent the dog from scratching the door and going out of the room.The webbing is thick and durable. The ringtone quality is excellent, not easy to rustle, and the sound is crisp.Adjustable design solves all the problems you are worried about, it can be suitable for all kinds of doors.It is not easy to stain and easy to clean.Item Name: Dog Doorbell RopeMaterial: Nylon, IronSpecification: 6 BellsFeatures: Portable, Durable, Easy to UseSize: 17cm x 10cm x 2cm/6.69" x 3.94" x 0.79" (Approx.)Notes:Due to the light and screen setting difference, the items color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Dog Doorbell Rope