These thick hard wood toy bases are made out of natural and non-dyed wood. Each wooden toy base is 5” long x 2 ¾” high and just over 1 ¼” thick. There are 3 large pre-drilled 9/16” holes that are perfect for thick cotton rope or chain. Because of the hardness of the wood they are perfect for larger birds as well as small birds. Mix and match with other toy parts for hours of fun and excitement for your feathered friend. These are drilled in house so there may be some slight drilling imperfections.