Key benefits Quick and easy bit changes: The keyless design enables tool bit changes, reducing downtime during tasks. Durable and versatile: Made of alloy material for reliable performance and long life across different equipment. Flexible clamping range: 3 4 mm diameter clamping range supports different bit sizes for a variety of drilling tasks. Compatibility and material Wide compatibility: Works with various grinding machines, dental drills, and other equipment. Suitable applications: Ideal for hardware, hobbies, and home use. Specifications at a glance Clamping range: 3 4 mm diameter Material: Alloy Compatible devices: Grinders, dental drills, and other equipment Applications Hardware and home improvement projects that require frequent bit changes without tools Hobbyist metalworking or woodworking tasks using small drill bits (3 4 mm) Dental drill setups or other compatible devices where quick, tool bit changes improve workflow