The R series balloons are heavy-duty reinforced with rods. They are manufactured in such a way as to provide greater strength and durability. Marking tools for ocean, sea, river, lake, beaches, cable installation, and swimming marking are widely popular among professional fishermen and net fishing. They are known for their durability as well as for recreational boats, suitable for anchoring and protection from impacts during mooring. Suitable for any use and all types of vessels. They are made from a single piece, meaning no parts are connected to form the finished mast, have a consistent wall thickness, and are resistant to ultraviolet radiation.