Features Excellent Workmanship: The high-precision collet chuck adopts excellent workmanship, which brings a smooth surface and will not easily hurt your hands during operation. Suitable for Milling And Lathe Attachments: This collet holder is suitable for milling and lathe attachments, manufactured to strict standards. Selected 40cr Alloy Steel Material: CNC collet chuck is made of selected 40cr alloy steel material, which is pressure-resistant and explosion-proof, and can be used for a long time. High Accuracy ER32‑UM chuck: The CNC collet chuck tool holder adopts a high-accuracy ER32‑UM chuck, which has high accuracy, high sensitivity, high stability and durability, and can be selected according to needs. Professional Design: Toolholder collet chuckadopts professional design, has a compact appearance, is easy to carry and use, and can quickly complete fast loading and unloading. Specification: Item Type: CNC toolholder Model: BT40-ER32-70 Clamping Range: Approx. 2 ~ 20mm / 0.1 ~ 0.8in(ER32) Length of L Part: Approx. 70mm / 2.8in Material: 40cr alloy steel Package List: 1 x CNC Toolholder Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List 1 x CNC Toolholder