These heavy duty bird seed feeders are made from durable polished die-cast aluminium, which gives the feeding ports extra strength - great in the battle against squirrels.The removable top and base allow for easy cleaning - the base can be taken off when the bottom 2 feeding port perches are removed (the allen key for this operation is included)Each feeder will hold approximately 600g of seed mix and is approximately 33cm high. Ideal for hanging around the garden or from feeding stations. Measures 30cm with out hanging hook, hook is 8cm high. The width is 14cm with the perches, 6cm without.