Bondtech DDX Extruder Series with IDGA

DDX is a BMG based direct extruder designed for Creality

1.75mm filament feeders with 1.75/5.00 mm drive gears including IDGA (Integrated Drive Gear Assembly)

The DDX extruder features Bondtech Dual Drive technology, and uses the new integrated drive gear to minimize run-out and improve print surface quality.
E-steps value @16 microsteps is 415.