The theraputic perch is a vet designed variable size perch which will trim your bird's nails and beak naturally while promoting healthier feet and leg muscles. Medium is 1-1/4" Diameter x 8" long. Colors include white, blue, pink, orange, yellow, punch, purple, green. Please indicate your preference in order in box above, or indicate "no preference." If nothing is entered we will assume "no preference" Not all colors are always available, we will send another color if choice is not available.