Was Printed On UM2+ 0.25mm Layer Height 0.8mm Nozzle For Head and Pin 0.4mm Nozzle For Lock, This Is To Get Clear Lettering 1.6mm Wall Thickness 40mm/s Print Speed with 20mm/s Top/Bottom Print Speed (for Large Overhangs. Fans 100% For Overhangs. 8% infill For Head And Pin 15% Infill For Lock No Need For Support as long as you print cold and slow enough.