Strong yet incredibly flexible! Incorporating the latest technology in ceramic stones, the New SuperStone Ceramic Stones offer an improved cutting ability, increased heat resistance up to 160°C (320°F), and longer life. Made of long ceramic fibers that will not break even under the most strenuous conditions, the New Super Stones can be used in ultrasonic polishers, reciprocating profilers, or by hand (with our Ceramic Super Stone Holders).