Features: Pneumatic drill chucks with hexagonal shank and three jaw design offer broad compatibility for power tools, eliminating frequent chucks replacements while ensuring secure bit gripping through its innovative quick install mechanism. Crafted from high strength metal, this chucks features a three jaw structure for precise grip stability during high speed rotations and withstands heavy duty industrial applications with superior wear resistance. Ideal for professional craftsmen, DIYer enthusiasts, and technicians requiring efficient tool transitioning across woodworking, metalworking, and automotive repair tasks. Perfect for time sensitive scenarios like construction sites, furniture workshops, and home renovation projects where rapid bit changes and reliabled drilling accuracy are critical. Engineered as a versatile tool chucks for drills, grinders, and impacts driver, its hexagonal shank compatibility and robust construction make it an essential workshop accessory across industries. Specifications: Component: Metal Size: Approx.6.35x51x9.5x23mm/0.25x2.01x0.37x0.91inch Size: Approx.6.35x52x9.5x30mm/0.25x2.05x0.37x1.18inch Clamping ranging:0.3-3.6mm clamping ranging:1.5-6.5mm Package Includes: 1pcs 3 Jaw Drill Chucks Hexagonal Shank Adapter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.