Hi guys, Welcome to the Advanced Video Search Engine, and you are watching Original Prusa i3 MK2 Multi Material upgrade release - dual/quad extrusion. That video is uploaded by Prusa 3D at 2016-09-28T04:15:51-07:00. We are promoting this video only for entertainment and educational purpose only. So, I hope you like & enjoy it. [KpcH74DXyy0]