Eagle Tool US ESP37554XH X Flex Installer Drill Bit and Adaptor Kit, Screw Point, 3/8-in by 54-in bit and Hex Adaptor, Made in the USA

Uniquely designed with a notch in the shank to prevent the bit from slipping out of an extension and being lost inside the wall Used with the included 3/16-inch Quick Switch Hex adaptor, the notch will prevent the annoying slip in the chuck Made in the USA with ultra sharp threads for the best pulling power Moves quickly through some of the hardest woods with its aggressive and self-feeding screw point Features three flat grips and a notch on the chuck end, as well as wire fishing accommodation holes in the head and shank Measures 3/8-inch in head diameter, 3/16-inch in shank diameter, and 54-inches in overall length