Features: brand new and high quality Heatblock size approx 20x20x10mm/0.79x0.79x0.39in. Inner hole for set screw: M6 and M3. Made of premium , high temperature resistant, durable in use and longer service life. Heat pipe:6mm diameter, thermocouple mounting holes:3mm diameter. Accept nozzle with M6 threads and works perfect with extruder nozzle throat & heat-insulated cotton. It is machined with very high precision and high quality, been tested perfectly for high-temperature printing. Specifications: Item Type: Heated Block Material: Brass Size:approx 2x1x2cm/0.79x0.39x0.79in Used for: CR10/ for E3D V6 3D Printer Package Includes: 1 x Heated 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.