Features Inserted firmly into the driver:1/4 inch quick change hexagonal nut driver inserted firmly into the driver, ready for immediate use, new high quality, reliable and safe quality. Long life: The hexagonal shaft is suitable for quick change bits and any drill, screwdriver or screw gun, mainly made of high quality chrome vanadium steel material with anti-corrosion coating for long life Strong magnetization design: With strong magnetization design, when used with impact wrench, it can enhance the safety locking and locking of nuts and bolts fasteners, with stable performance and high practicality. Applicable to electric drilling tools:The total length of the adapter is 48mm, and the adapter nut is M8 hexagonal nut, which is applicable to electric drilling tools, and we believe it can bring convenience to your life. Service: We pay great attention to our customers' buying experience. You can buy with confidence. As a responsible seller, our company provides reliable products and services. If you have any questions, please contact our customer service, we will solve it within 24 hours. Specification: Item Type: Power Nut Driver Material: Chrome vanadium steel Purpose: Tapping die holder adapter Adapter Handle Type: Hex handle Adapter Handle Size: 1/4in Adapter Total Length: Approx. 48mm / 1.89in Adapter Nut: M8 hex nut Adaptation Tools: Impact wrench, electric drill, etc. Package List: 10 x Power Nut Driver 1 x Storage Box Package List 10 x Power Nut Driver 1 x Storage Box