CHESTNUT C3S PRO Sharp Burrs with Hardness HRC 55-58Cut Beans fast and consistently What is Professional Manual Grinder? Professional hand grinder with Premium Quality burrs and High accuracy Original Patented S2C 660 Burrs With long time effort of parametric researches and adjustments, we released this new S2C 660 Burrs based on the patented philosophy of S2C (Spike To Cut) to make secondary cutting. S2C 660 Burrs is derived from the S2C 860 on. Chestnut X which received unanimous praise from coffee industry since its release. TIMEMORE design team has reduced the size and fine-tuned the parameters to improve overall grinding effect significanlly. Adjustable Coarseness for Different Needs Patented Point to Point coarseness adjustment Adjust coarseness precisely for espresso, Moka, Pour over and Syphon, French Press, etc. Espresso : 7-8 circles Pour ower Coffee : 13-16 circles French Press ：16-20 circles Why CNC Stainless Steel Burrs? Stainless sleel burr is precision CNC cutting , easy to grind. Almost oll professional grinders have CNC stainless steel burrs. CNC Processing. Solid Aluminum Alloy supports to fix dual bearings. Two precise bearings to fix cenler shaft to make sure high concenlricity and high conslancy. Solid TextureTight Hand Grip lt' s easy for you to hold it with matte surface and Diameter of 52mm Slim body All-aluminum Alloy Container Reduce costs wih reasonable design Allow more coffee lovers enjoying the joys of grinding coffee beans Waming： No washing the grinder wih any lieuid like water. Kindly dean it with a brush NAME: Chestnut C3S PRO CAPACITY: Max.20g MATERIAL: Aluminum Alloy + Stainless Steel SIZE: Body 158mmX51mm Handle:160mm