ER40 Spring Collet Chuck Product Description Product Description Discover the precision of the ER40 Spring Collet Chuck with a gripping range from 2.0mm to 25.0mm, perfect for CNC milling and lathe tools. Designed for professionals, this chuck provides robust performance and versatility in various applications. Specifications Type: Spring Collet Chuck Model: ER40 Material: Steel Gripping Range: 2/ 3/ 4/ 5/ 6/ 7/ 8/ 9/ 10/ 11/ 12/ 14/ 16/ 17/ 18/ 19/ 20/ 21/ 22/ 23/ 24/ 25mm Key Features ER Collet Chuck: This cylindrical fixture is essential for securing milling, drilling, and tapping tools, or for reinforcing parts for machining adjustments. Durable & Practical: The ER spring chuck is renowned for its substantial clamping force and precision. Its special angled slots enhance rigidity and shield tool holders from contaminants. Wide Application: Suitable for applications such as boring, milling, drilling, tapping, engraving, and on CNC machines and spindle equipment. Package Includes 1 x Spring Collet Chuck