100% brand new and high quality High-quality workmanship, the performance of heatbreak is excellent . All-Metal heatbreak, high temperature resistant. Compatible with E3 D V6 heatsink volcano heat block Fit for 1.75mm filament, M7 Thread for your reference The inner wall of the tube is very smooth so that the filament can pass through and reduce clogging more easily. Package Includes: 1 pc x Heatbreak Specifications: Item: Heatbreak Specification: For E3 D V6 Hotend Heater Block Used for: 1.75mm Filament Material: All Metal Throat Screw: M7 Total Length : Approx 37.6mm(Threaded Version) / 1.48mm Compatible with E3 D V6 Heatsink Volcano Heat Block 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.