The new TreeWorks Studio-Grade HS06 is a 6″ Triangle made of extremely hard, high-carbon steel of graduated diameter for brilliant shimmering response. Each larger triangle is made from a larger size bar to get the best possible tone. Tempering at 500 degrees gives these triangles a full spectrum of sound. Ultra thin zinc surface does not adversely affect the natural sound of the alloy. Each triangle is hand bent and tested by ear (no factory style mass production). A wooden triangle holder and 8″ professional beater are included.