The Irwin 4-inch Philips #3 Black Oxide Impact Power Bit (1837464) is designed for use with impact drivers. It features a precision tip for accurate and efficient screwdriving tasks. The bit has a 1/4 inch chuck size and is made in China by the brand IRWIN. This impact bit is ideal for working on various projects around the home or workshop, providing durability and reliability for screwdriving tasks.