HMT 1/2″ VersaDrive MAX Impact Adapter VersaDrive? MAX Impact adapter for use with 1/2″ drive Impact wrenches. Convert high torque, 1/2″ Impact wrenches for use with the VersaDrive? MAX system. Features & Benefits -Ideal for steel erection & bridge work -Ideal for modifying & enlarging holes -Use with high torque Impact Wrenches -Prepare holes ready for TCB & friction grip bolts -Use with 1/2″, 3/4″ & 1″ drive high power Impact Wrenches (1″ drive requires step-down adapter) Technical Specification Length: 65mm Width: 35mm