.5 LB Capacity, Yankee Blocker Squirrel Proof Bird Feeder, Weight Sensitive Collapsing Base Can Be Calibrated For All Birds, T Perches Allow For Comfortable Feeding, Powder Coated Gun Metal, Large Capacity & Long Tubes Ensure Squirrels Can't Reach Seed From Tops Of Feeders, 4 Ports, Lifetime Warrenty Against Squirrel Damage.