1. The Silver Refill Pens have brass tube and plastic tube these two styles.
2. The Silver Refill Pens are especially used for leather marking.
3. The Silver Refill Pens' writing line is obviously seen on dark leather material.
4. The Silver Refill Pens are with environmental protection, not any poison, ink is nontoxic.
5. The Silver Refill Pens have multi-design for choice.