Songbird Essentials 20in. Hanging Baffle Unbreakable dome resists squirrel damage. Protects feeder and seed from squirrels and weather. Easy to assemble. 1) 1-3/4 Thread loop. (1) 1-1/8 x 8 8 Open eye bolt. (1) 8 Lock nut. (1) Clear polymer dome. Tighten the 8 lock nut at the end of the threads on the 8 eye bolt. Hold the loop at the top of the dome and screw the 8 eye bolt through the dome into the loop. To hook the feeder to the dome hold feeder at an angle to slip eye bolt of feeder over eye bolt of dome.