Set of 2 5mm Self-Tightening Miniature Chucks for Miniature Electric Drills and Electric Grinders

The overall length of the product is 33 mm, the chuck length is 20 mm, the outer diameter of the base is approximately 9 mm, the inner diameter is 5 mm, and the chuck can hold tools with a shank diameter of 0.3 to 3.4 mm.This self-tightening micro chuck is compatible with most rotary tools, such as electric micro drills, electric sanders, etc., for drilling, model making, jewelry making, polishing, grinding, and more.The chuck is made of brass, which has excellent wear and corrosion resistance and can withstand high-frequency use and demanding working environments.This chuck features an automatic clamping system. Simply turn it to securely tighten the drill bit; it's quick and easy to use. Package contents: 2x chucks, 2x connecting rods, 2x hex keys.