It's a screw in a bag.

450℃-rated Bi-Metal Heatbreak melts filament faster and conducts 60% less heatacross the Break Zone than competing Heatbreaks It has two components with different thermal conductivity. It is composed of 3...

Light weight foaming PLA 3D printing material Print Parameters Nozzle Temp: 200-240℃ Bed Temp: 40-60℃ Print Speed: 30-90 mm/s Bed: Glass, PC or PEI Film Fan: On Material Properties X-Y...

Good up to 370c