Raindrip 052050 Poly Drip Watering Hose

hi, how long is the 5/8 inch hose This explanation is confusing: "...coils from 50 - 1000 ft" IS it 100 ft total? Thank you

Can this be bury 4 ft unground so I don't have to blow out the lines in the winter?

Is 5/8” the id or od?

Are there little holes in this hose so water can drip out or is this just a solid hose?