TreeWorks New Studio-Grade 10-inch Triangle. Extremely hard, high-carbon steel for brilliant shimmering response. Graduated diameter. 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 satin 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.) Includes wooden drumset mount. Made in Nashville, Tennessee.