Chuck Key Feature Highlights: 1. Universal Compatibility – Designed for 16mm (5/8") pilot size chucks with an 11-tooth mechanism, this key fits most standard drill chucks securely. 2. Durable Metal Build – Made from solid metal for reliable strength and long-lasting use, even with frequent tightening and loosening. 3. Compact & Easy to Handle – With an overall size of 9 x 4.8 cm (3.5" x 1.9"), it’s lightweight and comfortable to grip, making it convenient to store and carry. 4. Secure Grip Design – The tooth profile ensures a firm hold on the chuck, providing the torque needed to tighten or loosen jaws effectively. 5. Simple and Practical – No complicated parts or extra tools required—just insert, turn, and you’re ready to work. Product Details: This chuck key is crafted from sturdy metal to deliver dependable performance when adjusting your drill chuck. It’s specifically made for 16mm (5/8") pilot size chucks with an 11-tooth fitting, offering a secure connection and smooth operation. The compact, lightweight design fits easily in your hand or tool pouch, while the black finish adds a clean, professional look. Whether you’re tightening or loosening the chuck jaws, this key provides the right amount of torque to get the job done quickly. Specifications: - Pilot Diameter: 16mm / 5/8" (0.630") - Overall Size: 9 x 4.8 cm / 3.5" x 1.9" (L x W) - Color: Black - Material: Metal - Weight: 61g - Package Includes: 1 x Chuck Key Note: Slight color variations may occur due to lighting and screen differences. Product measurements may vary within +/- 1–3 cm.