The Saturn Evolution Classic Birch 4-piece shell pack from Mapex, featuring the SONIClear II "Halo" mounting system, is a dark, punchy and dry configuration ideal for classic rock. The SONIClear II "Halo" mounting system suspends each tom via four diagonal, lateral and supportive contact "under lug line" points on a one-piece ring suspension system which releases the pressure on the shell more evenly and enables the shell's full natural vibration and resonance. The Saturn Evolution Shell Pack comes standard with Mapex SONIClear Bearing Edges allowing for the direct transmission of sound to reduce unwanted frequencies as well as provide a strong fundamental pitch and an effortless tuning experience, especially at lower tunings.