Lamy T10 Fountain Pen Ink Refills. Blue/Black 4 boxes Four Boxes Of Lamy T10 Blue/Black Ink containing 5 refills each - (20 refills in total) Blue/Black ink is a mixture of the two colours giving a dark navy blue ink. Suitable for the majority of Lamy Fountain Pens Delivered to you from LONDON UK within 5 to 7 working days.