A 10 inch diameter hard plastic case, with wheels, the TP-1049 Tuffpak Diagonal Octagonal Tripod Case will snugly hold a tripod with a length of from 49 inches up to 54 inches (lid is telescoped out). The case comes with wheels and has a carry handle on top. This diameter is appropriate for tripods with up to a 100mm ball. Each Tuffpak is made from rotationally molded cross-linked polyethylene. The process takes nearly 45 minutes per case and produces the most durable tripod case available today. Tuffpak stands behind each one with a Lifetime Guarantee. The Tuffpak comes with two inches of foam in the lid and the base to protect your valuable equipment. Rotational Molding Process Overview: In Rotational molding, liquid or powdered thermoplastic resin is formed inside aclosed mold or cavity while the mold is rotating biaxially in a heating chamber.To obtain mold rotation in two planes perpendicular to each other (providing even distribution of the resin), the spindle is turned on a primary axis, while molds are rotated on a secondary axis. Rotational Molding (also popularly known as Rotomolding) is best suited for large, hollow products requiring seamless construction (for strength), complicated curves, a good finish, a variety of colors, and uniform wall thickness. The process has been used for products such as water tanks, storage tanks, industrial containers, outdoor chairs and benches, road barriers, portable outhouses,