Chimes are all hand cut and fused in a kiln. Each windchime is attached with a fishing swivel not string so they will turn in the wind and hold up to all kinds of outdoor weather.The chimes have been in 30 mile an hour winds with no problems. They are made with two pieces of glass fused together which makes them very strong. They also are fun to hang inside as well especially in front of a window or glass sliding doors. The pictures of course do not do the colors of the glass justice. Please note, shapes and sizes of chimes will vary, this is done to get the best sound possible. Please hang your chimes so the glass chimes only hit the glass and not another structure like a wall or a pipe.