attwood Corporation Pro-Swivl Ski Pylon Adj 34-58-Inch 2 inches post diameter 34 inches - 58 inches post height 6 inches post base diameter 33 inches - 56 inches arm length Removable pin arm base Pro Swivel Nylon Head 2" polished stainless steel tube. We offer a wide range of configurations for swivel-heads, posts, and bases Our towing products offer advanced features for durability and quality performance. The Pro-Swivel has a 360Degree rotational head with a nylon bushing for smooth slalom pulling DO NOT use ski pylons to pull any recreational equipment that is tied to the tow rope such as water tubes, aquaplanes, wakeboards, etc.