The Black & Decker U1531 Drill Chuck Key is a high-quality tool essential for CNC, metalworking, and manufacturing industries. Made in the United States, this chuck key is designed to fit 3/8" and 1/2" drill chucks, providing a secure grip for drilling applications. With the trusted Black & Decker brand and key chuck type, this product ensures precise and reliable performance for your workholding needs. Ideal for professionals in various industries, this chuck key is a durable and dependable accessory for your workshop or manufacturing facility.