Do you have trouble writing on tiny jewellery labels? - a ballpoint pen is far too thick and felt pens simply stay liquid and never dry!
This uNipin pen has waterproof fade-proof ink and the tip diameter is absolutely tiny: 0.05mm or 0.1mm (as available), a most unusual size that is difficult to find singly.
This is a very low value item. We have a minimum order charge of £7.50 (£6.25 + VAT). Is this the only item you require? You may wish to buy more than one, or add some other items to the order.