Looker Products has been a leading manufacturer of bird related products for over 20 years, This is great for some amusement! Put it on any tree or post and watch the squirrels jump to get the corn and go for a spin! They will keep trying until they get the corn to eat, The diameter that it spins around is 39 inch with the corn on it, Corn attaches easily and is held securely by a wire and spring, SKU: LOOK021