Item 7530 Your Price today: $ 7.39 Currently out of stock. Call or e-mail for availability info, or else click here for a form to tell us how many you wanted to order. Sandpaper cover for perches (up to 7/8 inches diameter). Serves as an aid in keeping bird's nails clean and trim. Perch covers should be replaced weekly or when excessively soiled or worn. Pack of 4 9-1/2 inch long covers.