Premium Quality: Made of high quality ABS material, safe and non-toxic, durable. (This product requires two AAA batteries, which are not included.) Interchangeable Toys: The ball of this toy can be replaced with other toys. You can replace the toy according to the cat’s wishes. Automatic lifting ball: Fix the toy on the table and the rope will go up and down automatically after activating the toy. It can shut off automatically or turn off the button for about 5 minutes while the toy is working. PERFECT GIFT: This interactive cat toy can stimulate their thinking and encourage active play. Also, it reduces loneliness and relieves cat stress, the first choice for cat lovers. Application: This automatic lifting ball has a diameter of 7cm, suitable for a table with a thickness of 1-3.5cm. Please confirm your table thickness before purchasing.