Features 1、ALLOY STEEL MATERIAL: Made from premium alloy steel, this CNC tool holder is plated with nickel for rust prevention. The yellow coating adds an extra layer of dust protection. It features 168 premium roller needles and provides a wide range of gripping force. 2、ENHANCED THICKNESS: The collet chuck tool holder is formed in one piece, ensuring high concentricity of the inner hole and stable accuracy during processing. This design minimizes jitter and improves accuracy. 3、MULTIPLE PROTECTION: The addition of dual upper and lower protective rings effectively prevents dust and water from entering the holder, keeping the interior rust free. The handle also features a textured design for a non slip grip. 4、ERGONOMIC DESIGN: The tool holder is ergonomically designed for comfortable and efficient use. Its shape and weight distribution offer a balanced grip, reducing fatigue during extended use. 5、VERSATILE APPLICATION: This tool holder is suitable for various tasks, including heavy duty cutting and slicing. Its robust construction and secure grip provide stability and control, making it a reliable tool for professional and DIY use. Specification Item Type: CNC Tool Holder Mode: BT40 MLC32 105L Material: Alloy Steel, Nickel Plating Shank: Approx. 105mm / 4.13in Body Accuracy: <0.008mm Overall Hardness: HRC50° to 58° Package List 1 x CNC Tool Holder 1 x Storage Box