Thank you very much for checking the product! (*- -)(*_ _)Pecko If you like, please purchase it immediately! Product Information -------------------- Color: Black Size: 51mm x Φ23mm Mounting Hole Conversion Shape ・Square shape 1/2sq (2 sides width 12.7mm) 　　↑↓ ・Hexagon shape 1/4 (2 sides width 6.35mm) Are you giving up on using hexagon bits because the tip shape is square when using an impact driver? If the tip shape of your impact wrench is square, size 1/2sq, by attaching this product to the tip, you will be able to attach hexagon bit tools. There are various types of 6-sided bits. ・Phillips and flathead screw bits, when assembling desks and shelves ・Hexagon nut and hexagon screw sockets, for car and motorcycle maintenance ・Drill bits, for drilling holes in wood and thin sheet metal ・Step drills, for enlarging holes in wood and thin sheet metal ・Star-shaped Torx bits, etc., there are various bits, so by setting this adapter, it can be used for a wide range of applications. The square hole shape can be fixed with a retaining pin and an O-ring. This is a retaining pin and O-ring set. To set it, align the hole of the impact wrench with the hole of this adapter, insert the retaining pin, and put the O-ring on to prevent the pin from falling out. The hexagon hole shape is a slide lock type. Hexagon bits come in a variety of types, and they are often attached and detached repeatedly, so it is a slide lock type that allows for easy attachment and removal. When attaching a bit, slide the sleeve part and insert the bit into the hexagon hole. To remove it, slide it in the same way to unlock it, and remove the bit. ※Caution※ For bits that do not have a groove on the hexagon bit, it cannot be locked, so please be careful as it may fall off even if attached to the tip. Thank you for checking the product description. If you wish, please purchase it as is!