Thanks to its innovative, flexible modular system, you can change the shape of the Flex canary perch continually, giving your birds a new setting to enjoy whenever you desire. Flex 4190 is ideal for all types of birdcage for canaries, exotic birds and other small birds. The Flex 4190 model can be applied to both horizontal and vertical mesh. The package includes 39 plastic pieces that you can assemble, creating new shapes according to your taste. Diameter 12 mm.