Features: brand new and high quality Material: Nozzle is brass. Throat is stainless steel. Heater block is aluminium alloy. Compatibility with MK10 hotend aluminum cooling block, such as DIY MK10 3D printer, for FLASHFORGE Creator Pro, for FLASHFORGE Creator X, for FLASHFORGE Dreamer, Builder PowerSpec 3D, Pro PowerSpec 3D X, Wanhao Duplicator 4S, Wanhao Duplicator 4X, Wanhao i3, etc. The heat conductivity of brass is 7 times as high as that of stainless steel. MK10 hotend structure only allows filament to have little contact with the nozzle. The material of the nozzle must be brass to ensure filament's temperature is the same as the thermistor, so it make the melt plastic more smooth. An M3 threaded hole has been added to the aluminum block, making it suitable for both M3 and M4 thermistor Quantity and specification: 1 piece MK10 hotend kit, it include these parts: 0.4mm nozzle with M7 thread 1 piece, throat 1 piece, aluminum heater block 1 piece. Specifications: Compatibility:MK10 Hotend M7 Thread Aluminum Heater Block Nozzle Output diameter:0.4mm Input diameter:1.75mm Size:M7 Material:Brass & Aluminum Alloy & Stainless Steel Specification of Throat: Compatibility:MK10 hotend M7 thread aluminum heater block, MK10 aluminum cooling block; Filament diameter:1.75mm Material:Aluminium alloy. Color:silver Item Size:approx 2x2x5.2cm/0.79x0.79x2.04in Note: Only the above package content, other products are not included. 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. Package includes: 1 Piece x Brass Nozzle 1 Piece x Stainless Steel Throat 1 Piece x Aluminum Heater Block