Features: brand new and high quality High temperature resistant,high thermal conductivity. The brass heatbreak withstand temperature maxing at 450 ℃. Ultra-thin 0.1mm inner hole, for stronger thermal insulation. We supply high flow version and standard flow version for different needs. High flow version with ceramic inslution reduce heat loss, higher printing speed,higher flow rate larger melting zone. Smoother filament extrusion, higher resolution print. The inner wall of the tube is very smooth so that the filament can pass through and reduce clogging more easily. Specifications: Item Type: Extruder Throat Tube Model Number: Dragon Heatbreak V2.0 Material: Brass Filament: 1.75mm Thread: M6 Length：Approx 31mm/1.22in Flow Type： Standard Flow /High Flow Package Includes: 1 X Dragon Heatbreak Tube note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.