New V6 3D Printer PLA ABS Extruder Head Nozzle Kit / Printhead V5 Upgrade P long range

1. Reduced radiator length, thickness, and diameter (shorter length improves hot end stability), while increasing the number of heat sinks. This reduces the hot end's weight while enhancing heat dissipation and stability.

2. Replaced the bulky external rotating aerodynamic connector with a built-in pipe fitting. This further reduces weight and hot end length, allowing the feed tube to penetrate deeper into the hot end for more reliable feeding (pneumatic connectors only allow short tube insertion, often leading to feeding issues).

3. Improved original heating block with a more concise and practical design. The contact between the heating tube, thermistor, and aluminum is optimized for more precise and effective temperature control.