[Wide Clamping Range] Featuring a clamping range from 1‑7mm, this holder comes with a stable structure, excellent performance, and a long service life, making it a reliable choice for various machining tasks.
[Made of 40cr Material] This collet chuck holder is crafted from high quality 40cr material, effectively reducing vibration and ensuring stable processing with high concentricity.
[Enhanced Strength] The hardness of this holder is increased through carburizing and quenching, making it more sturdy and offering stronger fatigue resistance at the interface.
[Integral Tool Holder Design] The inside and outside of the tool holder are integrally formed, allowing for fine control processing that enhances stability and concentricity performance.
[Improved Durability] With inner hole ground treatment and a carburizing and quenching process, this holder is suitable for ​​​ machine tool processing and boasts a longer lifespan than ordinary tool holders.

Spec:
Item Type: Collet Chuck Holder
Product Material: 40Cr + carbon steel
Hardness: 45-46HRC
Head Diameter: Approx. 16mm / 0.63in
Clamping Range: Approx. 1 ~ 7mm / 0.04 ~ 0.28in
Adapter Collet: ER11
Thread Type: M
Tool Handle Diameter: Approx. 10mm / 0.39in

Package List:
1 x Collet Chuck Holder
1 x Wrench

Note:
1. Incorrect assembly may damage the accuracy of the nut and spring.
2. Only the matching collet chuck can be used to assemble the nut.
3. Do not clamp tools that exceed the clamping range.