Our J Head compatible extruder is based on the original J Head extruder (http://reprap.org/wiki/J_Head_Nozzle).The set we sell is based on the version 4 nozzle and version 5 nozzle holder.
>1000 in stock in NL, shipping in 7-12 days
ReprapWorld is the number one webshop for all your reprap supplies for your 3D printer. We have a large collection of 3D printer components, from our famous electronics lines to filament from our own production. And everything is at a very competitive price!