Feature: The product is made of high-quality 65Mn spring steel with good toughness and fatigue resistance, and it can maintain high stability after long-term use. High accuracy, accuracy up to 0.008MM. Products are widely used in many types of CNC machine tools. The product is exquisite in workmanship to ensure that the product meets the accuracy requirements of machine tool processing. Various details of the product are carefully handled to ensure the stability and accuracy of the product. Specification: Model: ER11 Specifications: 3mm; 3.5mm; 4mm; 4.5mm; 5mm; 5.5mm; 6mm; 6.5mm, 7mm; 1/4mm; 1/8mm(Optional) Material: 65Mn spring steel Accuracy: 0.008mm Concentricity: 0.008MM Package list: 1 * Collet Note: The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product. 1、The product is made of high-quality 65Mn spring steel with good toughness and fatigue resistance, and it can maintain high stability after long-term use. 2、High accuracy, accuracy up to 0.008MM. 3、Products are widely used in many types of CNC machine tools. 4、The product is exquisite in workmanship to ensure that the product meets the accuracy requirements of machine tool processing. 5、Various details of the product are carefully handled to ensure the stability and accuracy of the product.