1. Operating temperature range: 190-220?.
2. High quality: diameter 1.75mm +/- 0.05mm.
3. Very good winding: Make the model looks shiny, no risk that the filament is entangled.
4. Very good tightening: no risk of blocking the spool or the nozzle.
5. Sweet Tips: When received the filament print a temp tower to find out the best temp setting, which you will be shocked by how nice it come out.