ST-310 Exclusive Leg Parts While keeping the original shape, the material is titanium. In general, titanium is light and strong, and it is said that it has a very low thermal conductivity, so it tends to cool down even when heated. The legs of the original ST-310 are made of steel, so they get very hot, and after 1~2 minutes of lighting the burner, they become so hot that they cannot be touched, but when replaced with titanium legs, the heat is considerably reduced, and it is possible to touch the lower part. After 2~3 minutes of extinguishing the fire, the water cools so quickly that even the upper part can be touched. Outward-facing: The ST-310 has two types of protrusions at the base of the legs: inward and outward. Please refer to the photos when making your choice. Accessories: Includes pliers that open when gripped to remove the black resin parts that fasten the legs.