TreeWorks New Studio-Grade 10-inch Triangle. · Made in Nashville, Tennessee. · 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.