Natural wood perch for birds, size M, 20mm diameter, 280mm length. - Brand: KAWAI - Size: M (20mm diameter, 280mm length) - Material: Natural wood - Application: Bird perch Thank you for viewing. I tried attaching it to a birdcage once, but the size didn't fit, so I'm selling it. It's almost unused, but please refrain from purchasing if you are sensitive to used items.