Feature: 1. Lengthened design is conducive to deep cavity operations, reduces the consumption of long tools, saves costs, and improves processing efficiency. 2. The design of the central through hole is conducive to water cooling and effectively suppresses vibration (the through hole does not have threads). 3. The handle is high‑accuracy grinding, the corners are smooth and no burrs, which has comfortable hand touch. 4. Advanced vacuum quenching treatment can realize carbon and oxygen co‑permeation, increase hardness and enhance lifespan. 5. Made of high quality 42CrMo, rugged, corrosion resistant and durable. Perfect for CNC machine tools, etc. Specification: Item Type: Collet Chuck Holder Material: 42CrMo Model: C32-ER32UM-100L Uses: Used for CNC machine tools, etc. Accuracy: ≤0.08mm Shank Diameter: Approx. 32mm/1.3in Shank Length: Approx. 100mm/3.9in Features: Quenched and hardened, the outer diameter and the ER inner cone are finely ground, which eliminates the unbalanced margin, which is conducive to the stability of the cutting process; the shank body is longer, suitable for deep hole processing, reducing the selection of machining tools and reducing costs. Improve efficiency. Package List: 1 x Collet Chuck Holder