The FFFF. or maybe 4 F's either way it's the brightest friend hanging in your yard. This feeder was in my head and couldn't get it out until I painted this. Fuoresces under a black or blue light. gloss coated and protected. Stainless steel hardware, 4 Perches, Teeth and skulls. You'll love this feeder more than the birds. Comes with a Premium Hand Made Steel black coated hanging wire.