0.5mm unisex pen refill, replaceable core, without breaking the ink. Linear pen clip, excellent elasticity and toughness, easy to carry, not easy to lose. High-grade imitation metal shell, the appearance of fashionable simplicity, full colour, so that the product is more classy. Internal weighted spring, increase the overall feel, make writing more comfortable. Carbonised wear-resistant beads on the pen tip, good strength, high toughness, smoother. Can be freely customised with logo, QR code, address, etc., professional printing, the content is clear and does not fade. Soft rubber material grip pen, comfortable grip, smooth writing.