Geeetech Upgraded Delta Rostock Mini G2s 3d Printer,Auto Level,Support 4 Materials 1.New updated control system. 2. Auto-leveling and auto-calibration. 3. More flexible effectors and diagonal rods. 4. More fluent printing process and higher precession. 5. Support PLA, ABS, Nylon and Wood filament,Further simplified structure and enhanced stability.