These tools are characterized by a reduced shank diameter compared to their cutting diameter. This design allows the use of larger drill bits in smaller drill chucks, typically found on portable drills and drill presses. For instance, a drill with a one-inch cutting diameter may have a half-inch shank, enabling its use in a standard half-inch chuck.
The design allows for increased hole-making capacity without requiring expensive equipment upgrades. The reduced shank simplifies the drilling process by offering versatility with diverse tool setups, providing a more cost-effective approach to creating larger holes. Historically, this design addressed the limitations of early drill press technology, making larger diameter drilling more accessible. The use of these tools improves job site efficiency and reduces the burden of transporting and setting up multiple heavy duty drill presses.
