Features: Adopting chrome-vanadium steel material, the socket bit adapter is of high harness, strong strength and long durability. The spring loaded ball bearing firmly holds the socket. 1/4inch hexagonal shank is suitable for all quick change chuck and standard drill chuck. A great tool to change the hexagonal size into square size, convenient for the installation of socket bits. It can be installed at the pneumatic screw driver, electric screw driver, electric drills and more electric tools. Specifications: Condition: 100% Brand New Material: Chrome-vanadium Steel Color: Silver Gray Optional Type: Long Type, Short Type Long Type: 1/2*1/4*73mm: 1/4in hex shank to 12.7mm square head 3/8*1/4*65mm: 1/4in hex shank to 9.53mm square head 1/4*1/4*65mm: 1/4in hex shank to 6.35mm square head Short Type: 1/2*1/4*50mm: 1/4in hex shank to 12.7mm square head 3/8*1/4*50mm: 1/4in hex shank to 9.53mm square head 1/4*1/4*50mm: 1/4in hex shank to 6.35mm square head Weight: approx. 68~91g Package Included: 1 x 3pcs/set Socket Bit Adapter Features High Durability: Made of chrome-vanadium steel, ensuring high hardness, strong strength, and long-lasting durability for reliable performance over time. Secure Socket Holding: Equipped with a spring-loaded ball bearing that firmly holds the socket in place, providing a secure and stable connection during use. Versatile Compatibility: The 1/4-inch hexagonal shank is compatible with all quick change chucks and standard drill chucks, offering versatility and ease of use across various tools. Conversion Convenience: Facilitates the easy conversion of hexagonal size to square size, making it convenient for socket bit installation and enhancing adaptability for different tasks. Multipurpose Application: Suitable for installation in pneumatic screwdrivers, electric screwdrivers, electric drills, and other power tools, offering versatile usage for various applications.