Drive Safe. Drive Clean.The M compound has been known for its extremely low levels of dust, low noise levels, and long life characteristics. Many consider this the highest grade brake pad for street-type conditions.Very popular amongst car show users and high-end vehicle owners that care very much about maintaining clean wheels and an overall clean look.Part of the Non-Steel Series, Endless uses a Non-Steel Developmental Process with a new, mild ceramic material to increase rotor friendliness.With no steel materials, dust is minimal and rusting is prevented, enabling ease of cleaning wheels (even with water).