Spare crank for Comandante C40 grinder. Black Crank makes grinding with your Comandante even easier and looks super sleek! The XL-Crank increases leverage, whilst the included “Big Joe” 55mm Knob can help relax your hand and lower arm. Smooth grinding! Black Crank is 100% compatible with all Comandante C40 MK3 and MK4 grinders.