What is a three-tine hand cultivator used for?

It loosens the top layer of soil in beds and around plantings and lifts small weeds. It is not a digging tool, so it will not break new ground or move large amounts of soil.

The listed size is about 1.97 by 3.15 by 11.02 inches, so roughly 11 inches long with a head about 3 inches wide. Check that against your bed spacing and storage.

Is it strong enough for hard soil?

The listing gives fiberglass as the material but does not say which parts are fiberglass or how thick the tines are. Treat it as a light-duty tool for loose, worked soil.

Does it come with a handle or is it just the head?

The listing describes a single hand tool with a handle, sized about 11 inches overall, and does not list separate parts. It does not name a grip material or a hanging hole.

How does it compare with a hand fork or trowel?

Three tines are better than a trowel for scratching up soil and raking out small weeds. A hand fork with heavier steel tines holds up better in compacted or stony ground.

What is in the package?

The listing specifies one package containing the cultivator, with package dimensions of about 2.76 by 3.94 by 12.99 inches and a package weight of 2.2 lb.