Check My Sentence Please

It provides a harder and an abrasion resistant surface.

Is the usage of articles correct?

The sentence would be corect, but a better way of putting that sentence would be

“It provides a harder, abrasion resistant surface.”

A native speaker would be very unlikely to phrase the sentence as it is written by Volcano.

It provides a harder, abrasion resistant surface.
It provides a harder surface, which is abrasion resistant.

(This is like Groundhog Day. Friday’s posts have been restored, but the posts made on Saturday - including the ones given in this thread - have disappeared. :slight_smile:
Hopefully the server tramnfer is now complete.)

Thanks, yea there weren’t 2 posts here lol