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 12.7mm) 　　↑↓ ・Hexagon shape 1/4 (2 sides 6.35mm) Are you giving up on using hex 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 hex bit tools. There are various types of 6-sided bits. ・Phillips and flathead screw bits, when assembling desks and shelves ・Hex nuts and hex 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. Hex bits come in a variety of types, and they are often attached and detached repeatedly, so it is a slide lock type that can be easily attached and removed. 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 hex bit, it cannot be locked, so even if you attach it to the tip, it may fall off, so please be careful. Thank you for checking the product description. If you wish, please purchase it as is!