Note: The color of the item may vary slightly due to photography and your own computer
Extension rod diameter and the other parts are precision ground to eliminate imbalances, increased stability during cutting, tighten the nut directly, high rigidity, Extremely powerful clamping force 
C10 Shank Holding all ER11A collets 
Model: C10-ER11A-100L 
Material: 40 los
Hardness: HRC46-50
Accuracy: 0.01
Shank Diameter: 10mm
Length: 100mm
Weight: 76g