Description: 4pcs Socket Converter Set Bit Drive Socket Impact Adapter Converter Reducer Sleeve Adapter Specifications: Material: Chrome Vanadium Steel Surface treatment: Black phosphating, laser marking Sizes: 1. 1/4" Male to 3/8" Female, 2. 3/8" Male to 1/4" Female, 3. 3/8" Male to 1/2" Female, 4. 1/2" Male to 3/8" Female Hardness: (HRC) 40 ± 2 Quantity: 4pcs Features: -These tools adapt to the situation on the fly to get it done. They create replacements for lost or broken sockets, expand incomplete socket sets, and Allows greater flexibility for all sockets and drive tools. -Ball detent securely holds sockets on the coupler. -Made of the highest quality chrome vanadium steel, each piece undergoes a precise heat treating process, hardening and strengthening it for use with impact wrenches and drivers. -Suitable for use with air pneumatic, electric impact wrenches and ratchets. Package Included: Socket Bit Driver Impact Adapters Notice: 1.Please allow 1-2mm error due to manual measurement.Pls make sure you do not mind before you buy. 2.The color may have different as the difference display,pls understand. More Details: