This Jacobs Chuck Keyless 510 series Hand-Tite is a high-quality tool that can tighten and hold 3/8" (10mm) drill bits securely in place. Made in the United States, this chuck is perfect for any DIY or professional metalworking project. The chuck features a keyless design, making it easy to change out drill bits quickly and efficiently. The brand name Jacobs is well-known in the industry for producing reliable and durable chucks. This chuck is ideal for use in drill presses or lathes and can be used for a variety of applications. Buy with confidence knowing that you are getting a top-quality product that will last for years to come.