product description Advantage：

1.With removable pointed Stainless Steel tips.It's easy to change nozzle tips in time when the filment block it.

2.A big problem with small, hot and slow prints is the heatr adiation of the hot end and nozzle itself. To get as little as possible heat into the print, the nozzle needs to be as long and pointy as possible. The longer the nozzle, the bigger the distance between heater block and the print. And the more pointy it is, the less heat radiation can affect the print. size:0.4mm Filament：1.75mm Package list:4Pc Nozzles all 0.4mm