No tools needed to completely and easily clean the feeder: simply lift the cap, then pull the metal rod to remove the ports and feeder base in just seconds. Rust-proof metal parts. UV-stabilized polycarbonate tube. Dimensions: 23" H (plus 4-1/4" hanger) x 2-1/4" diameter tube. Perches extend about 1-3/8". By Droll Yankees.