Diplomat pens are built using only the highest quality components: A full metal casing for all Diplomat pens. This ensures long lasting, perfect micrometrical fittings, weight, balance ans shock resistance. Diplomat fountain pen nibs and ink-flow systems are tailor made by Diplomat, because durability is a matter of precision. Diplomat pens are all hand made and tested: No machine can replace the guidance and expertise of hand assembly and unit per unit teesting. Because of this, each and every pen undergoes manual testing to ensure that writing performance and consistency is perfect. Five Year Warranty This extremely severy manufacturing process is why Diplomat is able to supply a full five year warranty. Nevertheless, repair requests received by customers for service, even for very old pens, are taken care of and where needed repaired by experts at a small charge. Pen lovers and specialists recognise Diplomat pens as the best quality per value that money can buy.