Description: Made of natural wood with high quality quartz sand. Screw and spacer with edible grade 304 stainless steel, never rust. Can be used for installation on a variety of parrot cage. Let your birds stand and rest,relieves boredom and increases activity fun. A place for playing and exercise, encourage birds to exercise and help them develop balance and coordination ability. Specification: Material: Wooden Color:Blue,Red Rod Diameter:approx.2cm/0.79 inch Size S(LW):approx.18.5x11cm/7.28x4.33 inch Size L(LW):approx.29x16cm/11.42x6.3 inch Package Includes: 6 Pieces Rod 4 Pieces Elbow Pipe 4 Pieces Nut 8 Pieces Spacer Note: Due to the manual measurement, there is a slight difference between the size from the above and the actual item. Because of the displaying and lighting effects, monitor settings,etc.there could be a little color difference acceptable, please kindly note.