The included hexagonal ensures quick installation of the 1 / 4 " shank adapters, transforming standard drill bit into hole boring tool for workshop efficiency Ideal for professional carpentry, metalworkers, and enthusiasts requiring extended reach in confined space during drilling operations High concentricity precisions polising drill bit extension rod enables accurate hole drilling for woodworking and construction projects with its steel construction Perfect for creating depth consistent bores in large vases, window frame, and pipe bushings while maintaining precise alignment in challenging workspaces Crafted from rusts resistant steel, this extension rod features vibrations dampening stability and screws for secure, slip frees tool connecting, Manufacturer: Zqxnt