Does it come with both a string head and a brush blade?

It is sold as a 3-in-1 kit, so it includes the string trimmer head plus metal cutting attachments for brush and edging. Check the box contents for the exact blade sizes included.

What fuel mix does the 52cc engine need?

It is a 2-cycle engine, so it runs on gasoline mixed with 2-cycle oil, typically at a 40:1 or 50:1 ratio. Follow the manual's ratio and use fresh fuel to avoid starting problems.

Is it too heavy for a small yard?

At about 21 lb it is heavy for light trimming around a small lawn. It makes more sense for large lots, fence lines and brush where the gas power pays off.

How does it compare with a battery trimmer?

It has more sustained power for thick brush and no battery runtime limit, but it is heavier, louder and needs fuel mixing and engine upkeep. Battery trimmers are lighter and simpler for routine lawn edges.

What cutting width does it have?

The string trimmer head cuts a swath of about 13 inches, which is typical for this engine size. The metal brush blade cuts a narrower path for heavier stems.