Those parts ore compatible with Scalar Family 3D printers and AllInOne Hot end . This hot end can be found here: http://hotends.fr/ There are 3 parts: 1-Scalar - AllInOne_Base _v2.stl the base part that can be fixed on the X carriage 2-Scalar - AllInOne_Block_inductor_v2.stl the inductor block, capable of holding inductive probe 3-Scalar - AluHotEnd_Top.stl: the top part that can accept a Pneufit connector with 1/8" thread Have a great printing experience! 3D Modular Systems Evolutive 3D Printers http://www.3dmodularsystems.com Twitter: https://twitter.com/3dmodularsystem Youtube: http://www.youtube.com/c/3DModularSystems3DPrinters