HMT VersaDrive MAX Heavy Duty Impact Reamers - 1-1/16"VersaDrive MAX reamers offer a heavy duty solution for enlarging and aligning holes in thick metal plate (e. g. 3 4" and above) or at large diameters. Specially designed cutting geometry and a unique 13 16" shank mean they can be used with high torque Impact Wrenches and the most powerful Magnet Drills for superior performance and portability, allowing the job to be completed on site and not removed for reworking. Ideal for steel erection & bridge