Hardwood finish repair advice needed.
 

I have to refinish a few spots on my kitchen hardwood floor.

The issue was there when I purchased the house a few years ago, and just getting around fixing. I believe the issue was a result of a 'rolling cart',
moving back and forth which wore the finish completely off the hardwood.

There are two spots on either side of kitchen island. Areas look like the 'finish' has been worn off the wood, each area about 6-8" long, and across two strips/planks of hardwood.

So looking for suggestions about refinish.... Obviously I need to sand the wood first, what grade sandpaper ? The wood is not stained, but has clear urethane not oil. So looking to use a 'water based' urethane for quick drying time.

I had a flooring repair/install company review, but they said it wasn't worth their time.

All your suggestions will be greatly appreciated, thanks !

BD - I tired just touching up a wood floor a few years ago - could not match it and it was very visible. I rented a floor sander (make sure it has a good dust collector with it), did the whole floor and it looked like a new floor when it was done. I must say, though, it was a lot of work.

I had an old oak floor that looked terrible. I assumed I would have to get the floor sanded and refinished. But after reading a lot Amazon reviews I decided to take a chance on Holloway House Quick Shine. I was blown away by the results! I did not sand the floor. I did clean it well before applying the finish. I may have used fine steel wool in some spots (I can't actually remember). The finish was very easy to apply with a mop. Best of all, the floor looked brand new when I was done. I did this 7 years ago and it still looks excellent. Read the Amazon reviews and watch some YouTube videos and see what you think.

https://www.amazon.com/Quick-Shine-T.../dp/B00GQ9ZMM0