Woodstock Chimes HCGONGM Hanging Chau Gong, Medium Woodstock Gongs are hand-hammered by a master gong maker and materials that have gone into crafting gongs for thousands of years, so each one delivers a rich, authentic sound Black finish ash wood, hand-hammered brass and black gong, mallet Length: 30" Gong diameter: 13" Overall length is measured from top to bottom of gong Perfect in a classroom, as a gift or in your daily meditation practice Over 30 years ago, Grammy award-winning musician and instrument designer Garry Kvistad created the first Woodstock Chime from an aluminum lawn chair he found in a landfill; Garry and his wife Diane founded Woodstock Chimes in 1979 and still develop the chimes today