4mm OD X 2mm ID PTFE Tube for 1.75mm Filament, Flexible Temperature Resistance
The PTFE tube made of durable PTFE (Poly Tetra Fluoro Ethylene) premium material, PC4-M6 Fittings is made of Copper; PC4-M10 Fittings is made of stainless steel. Specifications: Length: approx. Working temperature:-190°c to 280°c.