Convertible Cylinders Direct is an American, family owned & operated company, specializing in the manufacturing of hydraulic cylinders, since 1975. Based in Wolfeboro, New Hampshire, Convertible Cylinders Direct has been making convertible top cylinders, window & seat cylinders for cars from 1946 through today. Their cylinders are of the highest quality, backed by a 5-year warranty that is among the best in the business. They ship cylinders to buyers across the country and throughout the world, supplying car owners with the necessary part to keep the breeze in their hair and their cars on the road.