Features: Permanent Polystyrene Constructparticlemail: Constructed from excellent polystyrene, this pen shell ensures permanent durability, ideal for frequent use by artists and architects. Green Refillable Planumberebog: Developed exist refillable, this pen shell reduces waste, offering a sustainable option for green users in various settings. Ergonomic Ergonomic Gtear: Highlighting a ergonomic plan, it furnishes a comfortable grip, minimizing fatigue during extended use, excellent for illustrators and learners. Broad Agreement: Direct current various varieties of gold needle pen refills, it backs varied artistic fashion, making it flexible for art enthusiasts. Transportable and Thinumberebog: Its thin plan creates it simple carry, ideal for outdoor sketching and travel, enhancing convenience for on proceed artists. Specifications: Plastic Size: Standard size, suitable for hand-held use Attributes: Empty pen shell design, can be filled with gold-tracing paint of different colors Package Includes: Gold-drawing pen paint pen empty pen shell × 7 Instructions for use (Chinese) × 1 note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.