Feature: 1. Straight extended shank, long shank fit for deep processing, resolve the needs of to extend the depth of processing. 2. Extension rod diameter and the other parts are precision ground to eliminate unbalance, increase safety when cutting. 3. The nuts can be tightened directly, with high rigidity and strong clamping force. 4. It can reduce the use of extension tools, which can reduce costs and improve efficiency. 5. Available models to meet the needs of different processing scenarios. Specification: Item Type: Collet Chuck Holder Model: ER11M-150L Material: Chrome-molybdenum alloy steel 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.