Star stilts are composed of a high temperature clay body, but some clay bodies are known to warp when fired on stilts at Cone 5 or above. The metal pin stilts are rated to Cone 5/6. This unique feature will allow the  stilts to be utilized by hobbyists, as well as the professional potter. Stilts are able to withstand repeated firings and rugged treatment. The points are made of the finest quality metal alloy that are designed for many successful firings.