ER11 Collet Chuck Holder - 8mm Motor Shaft Spindle Extension Rod for CNC Milling, Boring, Drilling, Tapping, Grinding

• [High-quality Steel]: This er11 collet set is made of high-quality steel, which has good strength and good durability
• [High-quality Steel]: This er11 collet set is made of high-quality steel, which has good strength and good durability
• [Precision Grinding]: This er11 collet chuck cnc spindle is precision ground to eliminate imbalance and increase safety during cutting
• [Good Substitute]: This er-11 collet lathe tool holder can reduce costs, improve efficiency, which can replace your old collet well
• [Size]: The shaft hole of this router collet extension is 8mm (+0.02 mm) and needs to be heated and expanded, the shaft diameter is 18mm, the nut diameter is 13mm, and the nut diameter is 18mm.

Features: - This motor shaft collet is made of high quality steel material, straight shank with clamping nut to be tightened. - Extension rod diameter and the other parts are precision ground to eliminate unbalance, increase safety when cutting. - Straight extended shank fits for deep processing, meeting the needs of extending the depth of processing. - Collet is well packed in a protective container with label for safe transportation and storage. - It is widely used in boring, milling, drilling, tapping, grinding and other processing. Specifications: Type: ER11A-8mm Material: Steel Height: 40mm / 1.57" Shaft Diameter: 16mm / 0.63" Shaft Inner Diameter: 8mm(±0.02mm) / 0.31" Nut Diameter: 19mm / 7.48" Nut Inner Diameter: 9mm / 3.54" Package Includes: 1 x Collet Note: Please allow 1-2mm error due to manual measurement. Thanks for your understanding.