These perches are rough textured on the sides to keep nails trimmed, yet the top of the perches are smooth to prevent sore feet from sitting on rough concrete too much.
Extra Small is perfect for Finches through Parakeets 4.5" Long 5/8" Diameter
Small is perfect for Parakeets through Quakers 6.5" Long 7/8" Diameter
Medium is perfect for Quakers through Pionus 8.5" Long 1" Diameter
Large is perfect for Pionus through Amazons 13" Long 1.25" Diameter
Extra Large is perfect for Amazons through Macaws 13.5" Long 2" Diameter