Drilling and Holemaking in the Drilling and Holemaking sub-category in the Machining category from GoVets is the perfect place to find the right drill bit extensions for your project. Drill bit extensions are tools used to extend the reach of a drill bit, allowing you to drill deeper into a material. They come in a variety of sizes and shapes, and are made from a variety of materials, such as steel, aluminum, and titanium. Shop today and find the perfect drill bit extension for your project.