The C1 is a brilliant new addition to Timemore's line of hand coffee grinders. Keeping cost down with some plastic components, including the internal body, while making it lightweight and increasing the capacity! Not to mention, the same excellent grind quality. With the same sharp steel burrs, the same 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. And the updated handle connection gives this grinder an exceptionally precise grind and a smooth turning handle.