Java Wood Toy - Chain Gang mixed material bird toys appeal to your birds natural chewing and foraging instincts to curb cage boredom. All natural materials including java hardwood discs sisal rope and vine and more provide varying textures to keep your pets interest. Metal hanger included.Features. Java Wood Blocks and Slices. Vine Balls. Lots of colorful vine chains. Pear Link for attaching to your cage with a chain holding it all together.