Features: This 1/4 hexagonal shank drill adapter features tool less fast release mechanism for instantly bit changes, boosting efficiency for professional and DIYers who frequently switching attachments during projects. Crafted from high grade steel with precise machining and rust resistant coating, this socket adapter withstands heavy duty use in construction sites and auto repair shops without bending or breaking. The 1/4 inch hexagonal drive fits most power tools and accepts various bits/sockets, making it ideal for multiple repair tasks while eliminating the need for multiple adapters. Built in auto locking mechanism securely holds bits in place during operations, preventing slippage for home repairs and outdoor projects. yet functional extension design (79x70x6.35mm) provides access to tight spaces, perfect for mobile technicians and users. Specifications: Component: steel Technology: precise machining, surfaces anti-rust treatments Parameters: 1/4 hexagonal adapter, quick auto-locking design Size: 79x70x6.35mm Practicality: Suitable for home maintenance, professional construction, and diyer enthusiasts. It is convenient and quick to disassemble and assemble, improving work efficiency. Package Includes: 1pcs Drill Bit Holder note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.