Bird Perch Material: All of the bird perch stand set are made of 100% nature wood, food-grade safety and environmentally friendly .Bird Cage Accessories Size: The length of two paw grinding sticks is 20 cm The diameter of round platform is 7.87 - 10 cm The length of rope ladder is 54 cm .Easy to Install: Each bird perch stand with a metal wing nut and a built-in bolt, easy to be hung in the cage and stable .Function: Birds need secure latching mechanisms to prevent them from figuring them out, and often requires perch stands to keep them entertained. Also, its satisfy habit of climbing and biting for birds .Package Include: 2 x paw grinding sticks,1 x round bird stand platform, 1 rope ladder .