Features 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 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