Ample Accessories: The package includes 10 square socket adapter bits, providing sufficient quantity for your daily needs and replacements. Application: This hexagonal socket adapter is specifically designed for use as a handle plug-in for manual or power tool applications. With an overall length of approximately 6.5cm/2.6 inches, it's easy to carry and store. Material: Made from hardened high-speed steel, the socket bit adapter is robust, smooth, and high-strength for long-term use. The square tip size is approximately 10mm/3/8 inch, and the hexagonal handle size is approximately 6.3mm/1/4 inch. Please confirm the size before ordering to ensure a pleasant shopping experience. Dual Size Conversion: The 10mm hexagonal impact socket can convert the hexagonal polygon size to a square head size, allowing you to install sockets. It's a great conversion accessory that enhances work efficiency and provides numerous conveniences. Bearing Design: Each 3/8 square head on the socket adapter features a ball bearing spring for effectively securing the socket and preventing slippage. Color: Silver Gray Material: HSS Package Contents: 10 * Square Socket Adapter Bits