General description The Mini Keyless Chuck is a high-quality accessory designed for mini electric drills. Made from durable metal, this chuck is wear-resistant and ideal for holding tools with a shank diameter ranging from 0.3 to 3.4mm, making it suitable for various applications such as drilling, polishing, and grinding. Its non-slip texture allows for easy tightening by hand, ensuring a secure grip on your tools. Technical specifications Material: Brass + Aluminum Alloy Clamping range: 0.3-3.4mm Outer diameter: 10mm Installation hole diameter: 2.35mm Weight: 25g (approx.) Compatibility and accessories Compatible with most rotary tools, including miniature electric drills and electric grinders Packing list: 1 chuck, 1 connecting rod, 1 hex wrench