The ship balloons in the R series are heavy-duty reinforced with rods. They are manufactured in a way that provides greater strength and durability. The marking tools for ocean, sea, river, lake, and beaches are widely used by professional fishermen and in gillnet fishing, known for their durability. Suitable for recreational boats, they are used for anchor lifting and protection from impacts during mooring. They are suitable for any use and all types of vessels. The balloons are made from a single piece, meaning no parts are joined together to form the finished mast. They feature a consistent wall thickness and are resistant to ultraviolet radiation.