Originally Posted by Polaris OBark

You cannot, accurately. That is why you see two separate wrenches.

You are unlikely to use small hex-wrench sized bits at higher torque, so buying two bit sets isn't a major issue. Many of the low-torque torque wrenches come with a bit set that corresponds to the normal-sized hex wrenches and torx bits.

The larger wrench is typically used with sockets, or bizarrely large hex bits.