Some plastic components, including the internal body, keep cost down while making this grinder lightweight and increasing the capacity! Not to mention, the same excellent grind quality. With sharp steel burrs, a spring mechanism that locks the inner burr into position, and two ball bearings that hold the grind shaft in place, you're not losing even a little bit of grind quality. The well-designed handle connection gives this grinder an exceptionally precise grind and a smooth turning handle with every rotation. Lastly, the new and improved grounds bin is lined with aluminum for greater durability and a static free grinding experience.