HIGH QUALITY GREAT VALUE! The Timemore C3 is a brilliant addition to Timemore's line of coffee hand grinders. 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. Included with the C3 is Timemore's Spike-to-Cut (S2C) 660 burr set, based on the popular S2C 860 burrs in the Chestnut X. The dual-bearing stabilization in the C3 utilizes a reliable spring mechanism to lock the inner burr into position, and ball bearings to hold the grind shaft in place, to ensure 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 made from aluminum for greater durability and a static free grinding experience. ⌀38mm (⌀1.5in) HRC55-58 Spike-to-Cut (SC2) 660 Stainless Steel Burr Set Dual Bearing Concentric Burr Shaft Stabilization Materials: Aluminum Alloy, Stainless Steel, Polycarbonate (body, lid and handle) Capacity: 20g (0.71oz) Size: 147x52mm (5.8x2.05in) Includes a grinder brush Chestnut C3 Model Comparison Model C3 C3s C3s PRO C3s MAX C3 ESP C3 ESP PRO S2C 660 Burrs (⌀38mm) Yes Yes Yes Yes Yes Yes Grind Adjustment (clicks per rotation) Fine (12 clicks) Fine (12 clicks) Fine (12 clicks) Fine (12 clicks) Superfine (30 clicks) Superfine (30 clicks) All-Metal Aluminum Body No Yes Yes Yes Yes Yes Foldable Handle No No Yes Yes No Yes Capacity 20g (0.71oz) 20g (0.71oz) 20g (0.71oz) 30g (1.06oz) 20g (0.71oz) 20g (0.71oz)