The Grover 6" Super-Overtone Triangle is a culmination of years of extensive research and experimentation. Each triangle is forged from a specially treated high-carbon steel alloy. The resulting wide spectrum of overtones coupled with an extraordinary large dynamic range combine to give this triangle its characteristic sound. Unlike most triangles, the overtone resonance of this instrument will remain consistent throughout the expanded dynamic range. Abundant acoustic energy is produced by these triangles, eliminating the need to overplay. The microscopic Kanigen plating allows the highest harmonics to respond, yet it is more durable and longer lasting than ordinary chrome plating.