Will this filament really print at 600 mm/s?

The filament is rated for high-speed printing, but reaching that speed depends on your printer, hotend and slicer profile. Most machines need a tuned high-flow setup and higher nozzle temperature to keep up. Expect to calibrate flow and temperature before pushing maximum speed.

What tolerance does the diameter hold?

The stated tolerance is 1.75 mm ±0.03 mm. That is a reasonable range for consistent extrusion on most printers. Check the diameter with calipers if your prints show inconsistent walls.

The listing calls it PLA basic in the title and PLA+ in the description. Treat it as standard PLA: easy to print, but not notably tougher or more heat resistant than ordinary PLA.

What nozzle and bed temperatures should I use?

Standard PLA settings apply: roughly 190–220 °C at the nozzle and 50–60 °C on the bed. Raise the nozzle temperature toward the top of that range when printing fast. A glue stick or textured sheet helps with adhesion.

Does it need drying before use?

PLA absorbs moisture slowly, so a sealed spool usually prints fine out of the bag. If you hear popping or see stringing and rough surfaces, dry it at about 45–50 °C for a few hours.