How much torque does it have, and is that enough?

It is rated at 33 ft-lbs. That is fine for most nuts and bolts on cars, bikes and furniture, but it will struggle with heavily seized or high-torque fasteners, where a breaker bar or impact wrench is the better tool.

How long does the battery last and how fast does it charge?

It comes with two 2.0Ah 12V Max packs, and the fast charger fills a pack in about 45 minutes. Two batteries let you swap one in while the other charges.

What is included in the set?

The wrench, nine 3/8-inch sockets, two 2.0Ah batteries and a charger. It is a complete starter kit for common socket sizes.

Does it fit standard 3/8-inch sockets?

Yes. It uses a 3/8-inch drive, so the included sockets and most standard 3/8-inch sockets and extensions fit.

Is it a replacement for an impact wrench?

No. It is a powered ratchet for spinning fasteners quickly and light tightening. For breaking loose tight bolts or lug nuts, use an impact wrench or a breaker bar.