Description: This collet is made of 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 provide a powerful clamping force. This collet can reduce costs, improve efficiency and would be a good replacement part for your old one. Specifications: Type: C16-ER11-35L-5MM Height: 40mm / 1.57 inch Shaft Diameter: 16mm / 0.63 inch Shaft Inner Diameter: 5mm(±0.02mm) / 0.19 inch Nut Diameter: 19mm / 7.48 inch Nut Inner Diameter: 9mm / 3.54 inch colour:Silver&black(Package color is random) Material: Steel Package Contents: 1 * Motor Shaft Collet 1 * ER11 Collet Only the above package content, other products are not included. Note: Light shooting 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.