The hills 115533 is a special ultra heavy duty 4 arm dryer and has 30m of strong easy clean steel core line the 57mm diameter main support pole is made from durable galvanised steel that will last for years and also take the weight of heavy wet laundry the hills 115533 has an easy raise and lower movement for easy use and the height can be preset between 165 metre and 226m so you can hang your washing without over stretching to the centre of the line thereby ensuring full use of the large drying