Professional adult graffiti pen for wall building $ 21.52 Usage: connected to the power supply, charging bank 5v2a interface Applicable population: over 3 years old Consumables: 1.75mm PLA / ABS Body size: 180 * 20 * 20MM Single weight: 45g Color box size: 187 * 86 * 58mm 1 piece / box Total weight: 0.35kg; Outer box size: 380 * 375 * 320mm, 40 pieces / box, Weight: 15kg Power specifications: American, European, British, Australian;