Welcome to the shop! 1. Extended design facilitates deep cavity operations, reduces the consumption of long tools, saves costs, and improves processing efficiency. 2. The design of the central through-hole contributes to water cooling and effectively dampens vibration (the through-hole has no threads). 3. The handle is ground with high precision, the corners are smooth and without burrs, providing a comfortable hand feel. 4. Advanced vacuum quenching treatment can realize carbon and oxygen penetration, increase hardness, and improve service life. 5. Made of high-quality 42CrMo, robust, corrosion-resistant, and durable. Perfect for CNC machine tools, etc. Item Type: Collet Chuck Holder Material: 42CrMo Model: C32-ER32UM-100L Application: Used for CNC machine tools, etc. Accuracy: ≤0.08mm Shank Diameter: Approx. 32mm/1.3in Shank Length: Approx. 100mm/3.9in Features: Hardened and tempered, the outer diameter and ER inner cone are finely ground, eliminating the unbalanced margin, which contributes to the stability of the cutting process; the shank body is longer, suitable for deep hole machining, reducing the selection of machining tools and reducing costs. Improve efficiency 1 x Collet Chuck Holder Your 100% satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!