Description:This collet is made of high quality steel for milling lathe tool and work-holding engraving machine. ER11 straight rod type collet extension handle body is relatively long, suitable for deep hole processing.The nut can be directly tightened to a powerful clamping force. This collet can reduce costs, efficiency and would be a good replacement part for your old one.Specifications:Type: C16-ER11-35L-5MMHeight: 40mm / 1.57 inchShaft Diameter: 16mm / 0.63 inchShaft Inner Diameter: 5mm(0.02mm) / 0.19 inchNut Diameter: 19mm / 7.48 inchNut Inner Diameter: 9mm / 3.54 inchcolour:Silver&black(Package color is random)Material: SteelPackage Contents:1 * Motor Shaft Collet1 * ER11 ColletOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.