The 2146Q1MAX, the most powerful 3/4" impact in its class – delivering performance and control in a durable, lightweight industrial-grade tool. For the first time, these impact wrenches combine a quiet, efficient motor with an innovative pressure gauge that letsy ou know it’s delivering optimized air flow and pressure. Together, these features increase productivity, save money, and prolong the life of your valuable tools. Also available in a 1" drive (2146Q2MAX), the 2146QMAX Series is ideally optimized for the vehicle repair industry,bodyshops, general industrial use, MRO, rail, heavy machinery, oil and gas, shipbuilding, and construction.