Features:- This kit can compatible with both 1.75mm and 3.00mm filament and easily swaps between the two if needed.- The kit contains hardened 3:1 Gears for smooth long lasting operation even with the toughest filaments.- Full ball-bearing operation insures smooth filament feed and filament guides are included to maintain proper operation even with FLEX filaments.Allen wrenches are included in the kit to allow assembly.- This kit can work perfectly with your installed E3D hotend and will allow users to upgrade their 3D printer's entire extrusion system. - Suitable for mounting E3D-V5 and E3D-V6 extrusion heads. Remote short-range exchange.Package Included:1x Titan Extruder1x Nema 17 Stepper Motor