Deter squirrels and large birds from eating all the seed with this precision weight adjustable feeder with a high capacity of 750ml the squirrel buster is rust proof and chew proof r when you receive your squirrel buster 750ml the factory tension will be set to 70g so anything weighing over this will force the mesh shroud to close over the feeding ports but you can simply adjust this to the maximum setting of 150g to allow more of your favourite garden birds to enjoy the contents the aver