Quality replacement: this II replacement tip is the replacement of the pen head, quick replacement, simple operation, not delay you anything. Fine workmanship: this II replacement tip is made of High-quality materials, the tip of the pen is thin, can better help you to position, complete the exquisite handicraft. include: 4 pieces II replacement tips. it can satisfy your daily use and replacement needs Compact and convenient: this II replacement tip is very compact, when it is not applied, it does not occupy a position on the side, save space. Instructions for use: after using the II replacement tips, when the wire of the pen nib has not been completely cooled, touching objects or skin cause scald.the wire of the pen nib becomes soft and easily deforms after heating. therefore, please cover the pen cap when it is not in use to prevent it from being broken and unable to be applied normally.