INTEGRAL FRAME RIGID STRUCTURE: 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 titanium alloy + plated copper,real bimetal material Copper and Titanium TC4. Titanium TC4 reduces heat upward conduction at the heating position, and copper for heat dissipation to accelerate heat conduction