TreeWorks Chimes - The TriangleTree™ - 4", 5" & 6" High Carbon Steel Triangles hand bent in Nashville, Tennesee, U. S. A. - 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.) All attached to a Tennessee White Ash Mantle. Includes Sand Cast Bronze Finger Cymbal & Stainless Steel Trianlge Beater.