Features:-Pole is made of anodized aluminum, Cap and Base are made of Injected Molded Nylon, it is lightweight, durable, tough, rustproof.The pole high extends from 30-1/2" to 54-1/2" and twists to lock in position.The cap diameter is 125 mm / 5 inch, the base diameter is 230 mm/ 9 inchGreat for any boat cover, supports any area of boat cover.Effectively prevent dirt, water, snow, fallen leaves, etc. from accumulating on the surface of the boat cover, making it easier for you to remove rubbish accumulated on the boat cover.Description:-Here at Marine City Hardware, we specialize in marine hardware products. We are all family and are all working together to bring our customers exactly what they need. Our motto is high quality, low prices, fast shipping and taking care of our customers. Everything is double checked and electronically tested before being sent out to insure the highest quality. Our company provides retail and wholesale services so you may also contact us if you want to order our products in bulk as well. Our exceptional prices and superior manufacture company make us the best around for any marine products. 100% Customer Satisfaction is our ultimate goal so we encourage you to message us because we will work for you.