PCTG Premium filament from Spectrum is an ideal alternative to PET-G. This filament prints as easily as PET-G, but has improved impact resistance, high stability and low shrinkage. PCTG has an HDT of 76 ˚ C, higher elasticity and high resistance to chemicals. 3D prints made with Spectrum Premium PCTG transparent colors can achieve an almost completely transparent effect. You do not need a heated print chamber to 3D print with this filament. The filament is 1.75 mm, comes in the color Iron Gray and has 1 Kg on the spool.