Features: brand new and high quality Rigid Structure Frame: 1:Protect the heat break from external force. 2:One-hand nozzle replacement more simplest without grasping the hotend. 3:Hollow-carved design,increase air circulation without obstacle. Bi-metal Heatbreak: High quality for titanium alloy + plated copper,real bimetal material Copper and for Titanium TC4. for Titanium TC4 reduces heat upward conduction at the heating position, and copper for heat dissipation to accelerate heat conduction. Plated Copper Hot Block: Premium material with surface Nickel plating,Rated to 550 °C for even the most demanding tasks,for all filaments,from basic PLAs to custom medical-grade PAEKs. Plated Copper Printing Nozzle: 0.4MM Standard nozzle,Non-stick, high performance, high temperature about 550°C, Excellent precision production,make sure the nozzle is smooth without burrs.The filament running more smoother. V6 J-head Hotend: for all 1.75mm E 3D V6 Makerbot 3D printer. For CREALITY CR-10 CR10S ENDER-3 V2 ENDER-3 PRO ENDER 5 ENDER-5 PRO ,Assembled kit,easy to install. Specifications: Material: metal Color: Red, Black (Optional) Package Includes: 1 x Red Lizard K1 V6 Hotend note: There may be slight size deviations due to manual measurement, different measuring methods and tools. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor.