TreeWorks Chimes - The EchoTree™ - Exotic tuning creates a haunting delay/doppler effect - 35 bar single row - Hand-tied w/ braided CordLoc to last (NO PLASTIC TIES) - Polished & T-6 Tempered bars for brilliant tone - 3/8-inch thick solid Aluminum/Titanium alloy - Hand-finished Tennessee Black Walnut Mantle - Handmade in Nashville, Tenn., U. S. A.