The Sabian 9" Alu Bell features a dome-shape with narrow striking edge. Aluminum construction creates clear, musical bell-like response. It's also very lightweight, producing long, sustaining notes. Each Alu Bell is individually created using traditional sand-casting methods, so each Bell has a rough surface. While Alu Bells are comparatively thick and have an unfinished look, their tone is sweet and musical, with exceptional sustain..