Compact Bowden Extruder, 1.75mm Filament for MK7 Drive Gear

This Bowden extruder kit is simple and effective. Flawless usage so far. Many thanks to schlotzz for his elegant design. Edited the openscad file dimensions for the larger MK7 drive gear.
NOTE:
-not needed 4mmTube Connector Union For 3D Printer Filament Guiding Teflon PTFE Tubing
-You should use 3D Printer Teflon Long Distance Nozzle Feed Tube PTFE Tube