The Studio Grade Triangle Chimes by TreeWorks Chimes are extremely hard, high-carbon, and ear-tested steel sound effects produced in Nashville, Tennessee. With a body tempered at 500 degrees for brilliant shimmering response, the chimes feature a graduated diameter and each larger size is made from a larger size bar to get the best possible tones. Available in an 8" or 10" size, the triangles are attached to a Tennessee White Ash mantle.