Polyurethane foam is made with the glass fiber reinforcement. Made of sheet steel, and steel tubing steel water. The adjustment handle is made of stainless steel is enhanced. Tip of this feature will adjust the weight according to each user.Consists of satin-play is enhanced central part of the tubing welded steel (she. 38x 2 mm), which is the axis of him. 28 mm machining steel and 4-star base in injection mounded aluminum.