The Overture High Speed PETG supports a maximum speed of 300mm/s, with higher toughness (vs.old version PETG) and optimized melt flow delivering unparalleled speed-quality balance.PETG filaments are made of premium high speed PETG plastic which combines the advantages of other filaments such as safe and odorless; little shrinkage rate; high impact strength and good liquidity (flows smoothly); Furthermore, this beautiful PETG filaments make prints come out with a little "shine" or "spark" to it.Buy with Confidence, 100% Satisfaction Guarantee. E-mail us if you have any issues or questions, we will make every effort to provide you with immediate help until you are satisfied.FAQs:Why can't the filaments stick to the build bed?1. Check the temperature setting before printing, PETG filaments have higher extrusion temperature than that of PLA;2. Check if the plate surface has been used for a long time, it is recommended to replace it with our new one to ensure a strong first layer adhesion;3. If the first layer has poor adhesion, it is recommended to re-level the print substrate to reduce the distance between the nozzle and the surface plate;4. If the effect is not good, it is recommended to try printing the draft before printing.Specification: Temperature Recommended Extrusion/Nozzle Temp: 230°C - 250°C (446?~ 482?)Heated Bed Temp: 80°C - 90°C (176?~ 194?)Filaments Diameter and Accuracy: 1.75 mm +/- 0.02 Recommended Printing Conditions:Cooling Fan: Turned onPrinting Speed: 30~50(mm/s)Raft Separation Distance: 0.14(mm)Retraction Distance: 1~3 mm(Note:Based on 0.4 mm nozzle and simplify 3D V 4.0.; Printing conditions may vary with different nozzle diameters.)Packaging Included:2 × spool of PETG filaments&nbsp