VEVOR Fire Pit Ring 45-Inch Outer/39-Inch Inner Diameter, 3.0mm Thick Heavy Duty Solid Steel, Fire Pit Liner DIY Campfire Ring Above or In-Ground for Outdoor

How many sections is this firepit Ring? Nowhere in the description does it it say. The photos support it is (4) four sections. Thank You

In the header it references 3.0mm thickness. In the body description is says 2.5mm. Which is it, 2.5 or 3.0?

Can I cut this down to make a custom fit the VEVOR Fire Pit Ring 45-Inch Outer/39-Inch Inner Diameter, 3.0mm Thick Heavy Duty Solid Steel, Fire Pit Liner DIY Campfire Ring Above or In-Ground for Outdoor Just By 1" or 2 Thank You