Features Perfect Application: The ER11A-150L collet chuck holder is applicable to deep hole processing, resolve to extend the depth of processing needs. Practical Tools: Straight lengthened shank, the shank body is longer, the shank length is 150mm. Strong Clamping Force: The nuts can be tightened directly, with high rigidity and strong clamping force. Good Appearance: The surface of this straight collet chuck holder is quite glossy which offers a comfortable feeling and nice appearance. Professional Collet: Extension rod diameter and the other parts are precision ground to eliminate unbalance, increase safety when cutting. Specification: Item Type: Collet Chuck Holder Model: ER11A-150L Material: Chrome-molybdenum alloy steel Optional Chuck Rod Diameter: 8, 10, 12, 16, 20mm Applicable Chuck Model: ER11A Shank Length: Approx. 150mm / 5.9in Package List: 1 x Collet Chuck Holder Extension Rod 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. Package List 1 x Collet Chuck Holder Extension Rod