Description:Straightshank type extended handle, the handle body longer apply deep processing, solving the need to extend the depth of processing. You can reduce the use of extension tools, which can reduce costs and improve efficiency. Excellent level products, prices are more affordable.Features:The chuck holder is made of quality metal material, high hardness, strong and durable. Great processing and fine making. 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. Suitable for milling machine to improve the hardness and endurance of the surface. C12-ER16-100L (including nuts) Straight Collet Chuck Holder CNC Milling lathe collet. A good replacement part for your old one. Specifications:Condition: 100 percent Brand NewMaterial: MetalType: C12-ER16-100L (including nuts)Clamp Handle Outer Thread Diameter: 12mmDesigned with collet Model: ER16 (folder knife range: 1mm-10mm)Rod Length: Approx. 12.6cm or 5inchPackage Weight: 170gUsage1: First clip the headgear into the nut, then tighten directly, holding strong.2:Straight shank type extended handle, the handle body longer apply deep processing, solving the need to extend the depth of processing.3: You can reduce the use of extension tools, which can reduce costs and improve efficiency.4: Extension rod diameter, and the other parts are precision grinding, can eliminate unbalance, increased safety when cutting.Package Included:1 x Chuck Holder.Note: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.