Flat rate $10 SHIPPING saves you $$$ on larger orders! Stainless Steel Wire is long lasting and chew proof. Metal die castings can't be chewed by squirrels. Powder coating on bird feeder finish won't chip or fade. UV stabilized polycarbonate bird feeder tube won't yellow with age, dependably durable. Metal perches won't hurt birds' feet, can't be chewed by squirrels. Seed baffle inside bird feeder keeps seed within reach of birds. Seed port size and design ornithologically correct for birds. Distance from port to perch on bird feeder is ornithologically correct for birds. Threaded base allows addition of tray and other accessories. Armor deters squirrels.