Features Long Shank: Straight extended shank, long shank fit for deep processing, resolve the needs of to extend the depth of processing. Increase Safety: Extension rod diameter and the other parts are precision ground to eliminate unbalance, increase safety when cutting. Strong Clamping Force: The nuts can be tightened directly, with high rigidity and strong clamping force. Reduce Costs: The collet cluck holder can reduce the use of extension tools, which can reduce costs and improve efficiency. Meet Different Needs: Available models to meet the needs of different processing scenarios. Specification: Item Type: Collet Chuck Holder Model: ER11M-150L Material: Chrome-molybdenum alloy steel Optional Chuck Rod Diameter: 8, 10, 12, 16, 20mm Applicable Chuck Model: ER11M Shank Length: Approx. 150mm / 5.9in Package List: 1 x Collet Chuck Holder Note: 1. Due to manual measurement, there are slight errors, thank you for your understanding. 2. The color of the product head is shipped randomly.3. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.4. The nut color of this product will be sent randomly. Package List 1 x Collet Chuck Holder